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A055432 Number of points in Z^n of norm <= 8. 2
1, 17, 197, 2109, 20185, 176377, 1395261, 10248133, 70554353, 458690081, 2839094517, 16837397901, 95964034121, 526432799625, 2784251496685, 14233010034069, 70491253578465, 338968561343793, 1585620669607461 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..1000

MATHEMATICA

a[n_] := SeriesCoefficient[1/(1-x) Sum[x^(i^2), {i, -8, 8}]^n, {x, 0, 64}];

a /@ Range[0, 19] (* Jean-Fran├žois Alcover, Sep 29 2019, from A302997 *)

CROSSREFS

Row n=8 of A302997.

Sequence in context: A069361 A177135 A130817 * A154276 A021379 A177075

Adjacent sequences:  A055429 A055430 A055431 * A055433 A055434 A055435

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified January 24 04:35 EST 2020. Contains 331183 sequences. (Running on oeis4.)