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A016727 Number of inequivalent solutions to x^2+y^2+z^2 = n^2. 10
1, 1, 1, 2, 1, 2, 2, 2, 1, 4, 2, 3, 2, 3, 2, 5, 1, 4, 4, 4, 2, 7, 3, 4, 2, 5, 3, 9, 2, 5, 5, 5, 1, 11, 4, 7, 4, 6, 4, 10, 2, 7, 7, 7, 3, 13, 4, 7, 2, 9, 5, 14, 3, 8, 9, 10, 2, 16, 5, 9, 5, 9, 5, 21, 1, 11, 11, 10, 4, 17, 7, 10, 4, 11, 6, 18, 4, 16, 10, 11, 2, 23, 7, 12, 7, 14, 7, 20, 3 (list; graph; refs; listen; history; internal format)
OFFSET

0,4

LINKS

Michael Gilleland, Some Self-Similar Integer Sequences

T. D. Noe, Table of n, a(n) for n = 1..10000

MATHEMATICA

Table[Length[PowersRepresentations[n^2, 3, 2]], {n, 0, 100}]

CROSSREFS

Sequence in context: A126865 A104640 A193335 * A054992 A096495 A011776

Adjacent sequences:  A016724 A016725 A016726 * A016728 A016729 A016730

KEYWORD

nonn

AUTHOR

csvcjld(AT)nomvst.lsumc.edu

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Last modified February 15 13:05 EST 2012. Contains 205789 sequences.