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A055407 Number of points in N^8 of norm <= n. 2
1, 9, 171, 1420, 8262, 33044, 111155, 312913, 793049, 1807754, 3834490, 7601982, 14333819, 25683401, 44367189, 73913316, 119544010, 187884853, 288597817, 433331391, 638511294, 923461382, 1314459790, 1842974369, 2550288371 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..24.

FORMULA

a(n) = [x^(n^2)] (1 + theta_3(x))^8/(256*(1 - x)), where theta_3() is the Jacobi theta function. - Ilya Gutkovskiy, Apr 15 2018

CROSSREFS

Sequence in context: A215554 A121476 A121477 * A083155 A229127 A132897

Adjacent sequences:  A055404 A055405 A055406 * A055408 A055409 A055410

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified March 25 10:23 EDT 2019. Contains 321470 sequences. (Running on oeis4.)