A032111 - OEIS

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A032111

"BIJ" (reversible, indistinct, labeled) transform of 2,2,2,2...

2, 6, 38, 366, 4502, 66606, 1149878, 22687566, 503589782, 12420052206, 336947795318, 9972186170766, 319727684645462, 11039636939221806, 408406422098722358, 16116066766061589966, 675700891505466507542

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..17.

C. G. Bower, Transforms (2)

FORMULA

E.g.f.: 2(-2+3e^x-e^(2x))/(2-3e^x).

CROSSREFS

Equals A050351(n) + 1. Cf. A004123, A027882.

Sequence in context: A197972 A068184 A067106 * A013703 A002031 A184731

Adjacent sequences: A032108 A032109 A032110 * A032112 A032113 A032114

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved