A307545 G.f. A(x) satisfies: A(x) = 1/(1 - x^a(0) - x^a(1) - x^a(2) - x^a(3) - ...) - x.

1, 1, 4, 8, 17, 36, 76, 160, 338, 714, 1508, 3184, 6723, 14196, 29976, 63296, 133653, 282217, 595920, 1258324, 2657032, 5610494, 11846920, 25015536, 52821917, 111536883, 235517320, 497310008, 1050102149, 2217358398, 4682095232, 9886545984, 20876079330, 44081187594, 93080269957

Offset

0,3

Links

Table of n, a(n) for n=0..34.

Example

G.f.: A(x) = 1 + x + 4*x^2 + 8*x^3 + 17*x^4 + 36*x^5 + 76*x^6 + 160*x^7 + 338*x^8 + ... = 1/(1 - 2*x - x^4 - x^8 - x^17 - x^36 - x^76 - x^160 - x^338 - ...) - x.

Crossrefs

Cf. A057601, A151945.

Sequence in context: A008372 A005697 A215108 * A115618 A019479 A084814

Adjacent sequences: A307542 A307543 A307544 * A307546 A307547 A307548

Keyword

nonn

Author

Ilya Gutkovskiy, Apr 14 2019

Status

approved