A132994 Partial sums of A078930.

1, 6, 10, 23, 35, 55, 63, 92, 105, 161, 173, 225, 249, 289, 337, 398, 426, 491, 511, 655, 687, 747, 771, 887, 968, 1080, 1120, 1224, 1268, 1492, 1524, 1649, 1697, 1833, 1929, 2098, 2150, 2250, 2346, 2666, 2726, 2886, 2930, 3086, 3242, 3362, 3410, 3654, 3711

Offset

1,2

Comments

a(10^5)=17924657155 ; a(10^8)=? (Problem 153 on projecteuler.net).

Links

Table of n, a(n) for n=1..49.

Project Euler, Problem 153: Investigating Gaussian Integers.

Example

a(5) = 35 = A078930(1)+A078930(2)+A078930(3)+A078930(4)+A078930(5).

Prog

(PARI) vector(50, i, sum(j=1, i, A078930(j))) /* see A078930 */

Crossrefs

Cf. A078930, A078910, A078911.

Sequence in context: A047651 A079426 A212161 * A199885 A024499 A143236

Adjacent sequences: A132991 A132992 A132993 * A132995 A132996 A132997

Keyword

nonn

Author

M. F. Hasler, Nov 22 2007

Status

approved