A341308 Row sums of triangle A249223.

1, 1, 1, 2, 1, 4, 1, 3, 2, 3, 1, 6, 1, 3, 5, 5, 1, 6, 1, 6, 4, 3, 1, 10, 3, 3, 4, 8, 1, 11, 1, 7, 4, 3, 5, 13, 1, 3, 4, 12, 1, 11, 1, 7, 10, 3, 1, 16, 4, 8, 4, 7, 1, 11, 6, 14, 4, 3, 1, 21, 1, 3, 10, 10, 6, 13, 1, 7, 4, 15, 1, 23, 1, 3, 9, 7, 7, 12, 1, 20, 8, 3, 1, 23, 6, 3, 4, 14, 1, 24, 9, 7

Offset

1,4

Links

Rémy Sigrist, Table of n, a(n) for n = 1..10000

Prog

(PARI) a(n) = { my (v=0, s=0); for (h=2, oo, if (n<=0, return (v), v+=s+=(-1)^h * ((n-1)%(h-1)==0); n-=h)) } \\ Rémy Sigrist, Feb 14 2021

Crossrefs

Cf. A237048, A249223, A262045.

Sequence in context: A101261 A214057 A067614 * A353359 A113901 A062799

Adjacent sequences: A341305 A341306 A341307 * A341309 A341310 A341311

Keyword

nonn

Author

N. J. A. Sloane, Feb 14 2021

Status

approved