The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A055429 Number of points in Z^n of norm <= 5. 2
 1, 11, 81, 515, 3121, 16875, 84769, 394691, 1733537, 7129227, 27634481, 102386243, 365127249, 1256538091, 4180101249, 13457728387, 41966634049, 126929576971, 373074639633, 1067860637059, 2981845163377, 8133266915563 (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, -5, 5}]^n, {x, 0, 25}]; a /@ Range[0, 21] (* Jean-François Alcover, Sep 29 2019, from A302997 *) CROSSREFS Row n=5 of A302997. Sequence in context: A323223 A211557 A333061 * A227556 A181989 A199557 Adjacent sequences: A055426 A055427 A055428 * A055430 A055431 A055432 KEYWORD nonn AUTHOR STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 9 00:20 EST 2022. Contains 358698 sequences. (Running on oeis4.)