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A164940 Partial sums of A138202. 0
1, 37, 181, 245, 281, 857, 1433, 1433, 1577, 2477, 3053, 3629, 3693, 4269, 6573, 6573, 6609, 8913, 10209, 10785, 11361, 13665, 14241, 14241, 14817, 15717, 20901, 21925, 21925, 27109, 29413, 29413, 29557, 31861, 34165, 36469, 37369, 37945, 43129, 43129 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..39.

S. K. K. Choi, A. V. Kumchev and R. Osburn, On sums of three squares

FORMULA

For asymptotics see Choi et al.

In particular, lim_{n -> infinity} a(n)/n^2 = 8*Pi^4 / (21*zeta(3)). - Ant King, Mar 15 2013

MATHEMATICA

Prepend[SquaresR[3, #]^2 &/@Range[39], 1]//Accumulate (* Ant King, Mar 15 2013 *)

CROSSREFS

Sequence in context: A140593 A195546 A142410 * A137724 A172080 A142181

Adjacent sequences:  A164937 A164938 A164939 * A164941 A164942 A164943

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 04 2010

STATUS

approved

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Last modified June 19 00:55 EDT 2019. Contains 324217 sequences. (Running on oeis4.)