A107947 Partial sums of A107946.

1, 2, 3, 5, 6, 8, 11, 16, 17, 19, 22, 27, 33, 41, 52, 68, 69, 71, 74, 79, 85, 93, 104, 120, 137, 156, 178, 205, 238, 279, 331, 399, 400, 402, 405, 410, 416, 424, 435, 451, 468, 487, 509, 536, 569, 610, 662, 730, 799, 870, 944, 1023, 1108, 1201, 1305, 1425, 1562

Offset

1,2

Comments

Terms at positions 2^k is found in A107948.

Links

Ivan Neretin, Table of n, a(n) for n = 1..8192

Mathematica

Accumulate@Nest[Join[#, Accumulate@#] &, {1}, 7] (* Ivan Neretin, Jan 31 2018 *)

Prog

(PARI) {a(n)=local(A=[1, 1], B=[1]); for(i=1, #binary(n), B=concat(B, vector(#B, k, polcoeff(Ser(A)/(1-x), #B+k-1))); A=concat(A, B); ); B[n]}

Crossrefs

Cf. A107946, A107948.

Sequence in context: A339732 A098491 A280449 * A120768 A271109 A293033

Adjacent sequences: A107944 A107945 A107946 * A107948 A107949 A107950

Keyword

nonn

Author

Paul D. Hanna, May 28 2005

Status

approved