Name:
Anonymous
2011-05-29 1:54
What in common between following sequences:
6, 18, 36, 60, 90, 126, 168, 216, ...
and
14, 64, 174, 368, 670, 1104, 1694, 2464, ...
???
Find formula, that generates them.
Name:
Anonymous
2011-05-29 2:11
map ?^(1/3) [1..2^16] | subst ?,frac==0.0 'i | ltl | {[@Xs 'i @Ys]->[Xs,len @Ys,r]}
6 18 36 60 90 126 168 216 270 330 396 468 546
630 720 816 918 1026 1140 1260 1386 1518 1656 1800 1950 2106
2268 2436 2610 2790 2976 3168 3366 3570 3780 3996 4218 4446 468
map {N -> (digits N | sum)^3 - (digits N | map ?^3 | sum)} [1..300] | drop 10
6 18 36 60 90 126 168 216 270 0 18 48 90
144 210 288 378 480 594 0 36 90 162 252 360 486
630 792 972 0 60 144 252 384 540 720 924 1152 1404
Name:
Anonymous
2011-05-29 2:13
>>4
Nice fail you have there.
Name:
Anonymous
2011-05-29 2:15
>>3
My god.
That Intro to Haskell course did not prepare my body for this.
What are all these features. Curly brackets? @ signs? Question marks? This is madness!
Name:
Anonymous
2011-05-29 2:17
blag. Revise
>>2 as 6 * (Σ 1..n). 1, 3, 6, etc.
Name:
Anonymous
2011-05-29 2:29
>>6
It just counts number of fractions between successive powers
map ?^(1/3) [2..2^16] | {[@Xs ?,frac==0.0 @Ys]->[Xs,len @Ys,r]}
Name:
Anonymous
2011-05-29 6:16
Let fn(x) = s(x)n - s(xn), where s(x) is the digit sum of x. The first sequence is f3, the second f4.
Name:
Anonymous
2011-05-29 7:39
>>6
It's not Haskell, it's ``in Lisp'' DSL.
Name:
Anonymous
2011-05-29 16:34
>>12
What? How did it guessed?
Name:
Anonymous
2011-05-29 16:43
>>14
Still it ommited results and comments from
https://oeis.org/A069964 which may be helpful if you want to know the meaning of sequence.
Name:
Anonymous
2011-05-29 16:49
>>3
Incorrect for the second portion, dumbass.
Name:
Anonymous
2011-05-29 18:10
they are both ways of keeping an autist busy
Name:
Anonymous
2011-05-29 20:18
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