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A055408 Number of points in N^9 of norm <= n. 3
1, 10, 265, 2780, 19250, 91067, 349122, 1115334, 3134307, 7903501, 18286018, 39418159, 79946582, 154050794, 283766861, 503208408, 861586362, 1432132554, 2314882321, 3655071196, 5640732550, 8538547541, 12683700617, 18541085573 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..500

FORMULA

a(n) = [x^(n^2)] (1 + theta_3(x))^9/(512*(1 - x)), where theta_3() is the Jacobi theta function. - Ilya Gutkovskiy, Apr 15 2018

CROSSREFS

Column k=9 of A302998.

Sequence in context: A060608 A003388 A322564 * A245983 A166811 A089906

Adjacent sequences:  A055405 A055406 A055407 * A055409 A055410 A055411

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified October 15 15:14 EDT 2019. Contains 328030 sequences. (Running on oeis4.)