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A363776 Expansion of 1/(Sum_{k>=0} x^(k^3))^2. 1
1, -2, 3, -4, 5, -6, 7, -8, 7, -4, -1, 8, -17, 28, -41, 56, -70, 80, -83, 76, -56, 20, 35, -112, 210, -324, 445, -562, 658, -712, 699, -590, 357, 22, -558, 1252, -2084, 3008, -3947, 4788, -5383, 5556, -5116, 3864, -1618, -1756, 6307, -11956, 18454, -25348, 31962, -37380 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
Table of n, a(n) for n=0..51.
FORMULA
a(0) = 1; a(n) = -(2/n) * Sum_{k=1..n} A363783(k) * a(n-k).
PROG
(PARI) my(N=60, x='x+O('x^N)); Vec(1/sum(k=0, N^(1/3), x^k^3)^2)
CROSSREFS
Convolution inverse of A173677.
Column k=2 of A363779.
Cf. A363783.
Sequence in context: A373228 A331298 A325351 * A279319 A171890 A287793
Adjacent sequences: A363773 A363774 A363775 * A363777 A363778 A363779
KEYWORD
sign,easy
AUTHOR
Seiichi Manyama, Jun 21 2023
STATUS
approved

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Last modified August 18 11:57 EDT 2024. Contains 375267 sequences. (Running on oeis4.)