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A046948 Sizes of successive balls in E_8 lattice. 1
1, 241, 2401, 9121, 26641, 56881, 117361, 199921, 340321, 522001, 794161, 1113841, 1604401, 2131921, 2874961, 3721681, 4845121, 6024481, 7659601, 9306001, 11513521, 13825201, 16702321, 19622641, 23553841, 27334081 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..25.

PROG

(PARI) B=1; th=[ 1 ]; bl=[ 1 ]; for (n=1, 10000, t1=divisors(n); t2=0; for (i=1, length(t1), t2=t2+t1[ i ]^3); t3=240*t2; th=concat(th, t3); B=B+t3; bl=concat(bl, B)); th; bl;

CROSSREFS

Partial sums of A004009.

Sequence in context: A142452 A167739 A119596 * A220056 A165383 A006687

Adjacent sequences:  A046945 A046946 A046947 * A046949 A046950 A046951

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified January 21 17:07 EST 2019. Contains 319350 sequences. (Running on oeis4.)