A184936 O.g.f. satisfies A(x/(1-x)) = 1/(1-x*A(x)-x^2*A(x)^2).

1, 1, 2, 4, 9, 19, 41, 87, 188, 399, 855, 1839, 3908, 8300, 18406, 37287, 78412, 217444, 208980, 752447, 6966312, -32965587, 103369671, 665090041, -9555165542, 56572244738, -57544084949, -2431577060646, 28175813965760

Offset

0,3

Comments

A(x/(1-x)) = 1 +x +3*x^2 +9*x^3 +28*x^4 +88*x^5 +277*x^6 +871*x^7+...

Links

Table of n, a(n) for n=0..28.

Crossrefs

Sequence in context: A036616 A136298 A122584 * A330489 A299106 A141015

Adjacent sequences: A184933 A184934 A184935 * A184937 A184938 A184939

Keyword

sign

Author

Vladimir Kruchinin, Feb 02 2011

Status

approved