A292831 Expansion of 1 - 2*x - 2*x^2/(1 - 3*x - 4*x^2/(1 - 4*x - 6*x^2/(1 - 5*x - 8*x^2/(1 - 6*x - 10*x^2/(...))))), a continued fraction.

1, -2, -2, -6, -26, -134, -778, -4950, -33946, -248230, -1921130, -15650358, -133644026, -1192354310, -11084816458, -107138260758, -1074526263898, -11163814083430, -119971275641642, -1331739929195766, -15250978417105082, -179975143242023366

Offset

0,2

Links

Table of n, a(n) for n=0..21.

Formula

Convolution inverse of A001861.

Example

G.f. = 1 - 2*x - 2*x^2 - 6*x^3 - 26*x^4 - 134*x^5 - 778*x^6 - 4950*x^7 - 33946*x^8 - ...

Crossrefs

Cf. A001861.

Sequence in context: A253093 A052660 A135407 * A076726 A032272 A214446

Adjacent sequences: A292828 A292829 A292830 * A292832 A292833 A292834

Keyword

sign

Author

Seiichi Manyama, Sep 24 2017

Status

approved