A342712 Partial sums of A248333.

0, 0, 0, 1, 2, 4, 6, 9, 13, 17, 22, 28, 34, 41, 49, 58, 67, 77, 88, 100, 112, 125, 139, 154, 170, 186, 203, 221, 240, 260, 280, 301, 323, 346, 370, 395, 420, 446, 473, 501, 530, 560, 590, 621, 653, 686, 720, 755, 791, 827, 864, 902, 941, 981, 1022, 1064, 1106

Offset: 1

Author

Slav E. Angelov, Mar 20 2021

Keywords

• nonn

Crossrefs

Cf. A248333, A000217, A342711.

Programs

PARI

f(n) = sum(i=1, n, !(issquare(i-1) || issquare(floor(i-sqrt(i-1))))); \\ A248333
a(n) = sum(k=0, n, f(k)); \\ Michel Marcus, Mar 20 2021

Formula

a(n) = A000217(n) - A342711(n-1) for n >= 1. [Corrected by Georg Fischer, Dec 13 2022]