A032114 "BIJ" (reversible, indistinct, labeled) transform of 1,2,3,4,...

1, 3, 12, 76, 655, 6906, 85204, 1201824, 19071693, 336276370, 6522231826, 138001776936, 3163262495419, 78085513281426, 2065232400748560, 58263438835891456, 1746434237976248665, 55428349087686179682

Offset

1,2

Links

Table of n, a(n) for n=1..18.

C. G. Bower, Transforms (2)

Formula

E.g.f.: B(A(x)) where B(x) is e.g.f. for A001710 and A(x)=x*exp(x). - Geoffrey Critzer, Jun 28 2014

Mathematica

nn=18; a=x Exp[x]; Range[0, nn]!CoefficientList[Series[1/(1-x)/2+x/2-1/2, {x, 0, nn}], x] (* Geoffrey Critzer, Jun 28 2014 *)

Crossrefs

Sequence in context: A134524 A120591 A247057 * A193162 A060946 A121421

Adjacent sequences: A032111 A032112 A032113 * A032115 A032116 A032117

Keyword

nonn

Author

Christian G. Bower

Status

approved