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A293253 Expansion of Product_{k>=1} (1 + x^k + x^(k^2)). 2
1, 2, 1, 3, 4, 6, 6, 8, 12, 15, 20, 22, 30, 35, 46, 53, 67, 80, 97, 117, 138, 165, 195, 231, 272, 323, 378, 442, 514, 600, 696, 806, 931, 1078, 1240, 1431, 1638, 1881, 2147, 2461, 2802, 3197, 3632, 4131, 4685, 5310, 6009, 6790, 7670, 8652, 9749, 10968, 12336 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
MATHEMATICA
nmax = 100; CoefficientList[Series[Product[(1+x^k+x^(k^2)), {k, 1, nmax}], {x, 0, nmax}], x]
CROSSREFS
Sequence in context: A300948 A098164 A158504 * A266687 A325271 A338860
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Oct 04 2017
STATUS
approved

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Last modified July 19 20:58 EDT 2024. Contains 374436 sequences. (Running on oeis4.)