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A122699 Least integer that can be written as a sum of 3 squares in n nontrivial ways (ignoring order and signs). 2
7, 0, 9, 41, 81, 146, 194, 306, 369, 425, 594, 689, 866, 1109, 1161, 1154, 1361, 1634, 1781, 1889, 2141, 2729, 2609, 3626, 3366, 3566, 3449, 3506, 4241, 4289, 4826, 5066, 5381, 7034, 5561, 6254, 7229, 7829, 8186, 8069, 8126, 8609, 8921, 8774, 10386 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Essentially the same as A095809. [From R. J. Mathar, Aug 02 2008]

LINKS

Wouter Meeussen, Table of n, a(n) for n = 0..112

EXAMPLE

a(4)=81 since it can be written as {0, 0, 9}, {1, 4, 8}, {3, 6, 6}, {4, 4, 7}

MATHEMATICA

Needs["NumberTheory`NumberTheoryFunctions`"]; Flatten[Position[Table[Length@SumOfSquaresRepresentations[3, n], {n, 0, 65000}], #, 1, 1]-1]& /@ Range[0, 120]

CROSSREFS

Cf. A117609.

Sequence in context: A197025 A096408 A005481 * A262807 A169603 A022920

Adjacent sequences:  A122696 A122697 A122698 * A122700 A122701 A122702

KEYWORD

nonn

AUTHOR

Wouter Meeussen, Oct 21 2006

STATUS

approved

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Last modified November 20 10:09 EST 2019. Contains 329334 sequences. (Running on oeis4.)