OFFSET
0,2
COMMENTS
Partial sums of A330574.
REFERENCES
Steven R. Finch, Mathematical Constants II, Encyclopedia of Mathematics and Its Applications, Cambridge University Press, Cambridge, 2018, p. 163.
LINKS
Amiram Eldar, Table of n, a(n) for n = 0..10000
Karl-Heinz Indlekofer, Eine asymptotische Formel in der Zahlentheorie, (German) Arch. Math. (Basel) 23 (1972), 619-624. MR0318080 (47 #6629).
FORMULA
a(n) ~ c * n * log(n)^2, where c is a constant. - Amiram Eldar, Mar 05 2020
MATHEMATICA
Accumulate @ Table[SquaresR[2, n]^2 * DivisorSigma[0, n+1], {n, 0, 50}] (* Amiram Eldar, Mar 05 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 10 2020
STATUS
approved