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A081188 6th binomial transform of (1,0,1,0,1,.....), A059841. 3
1, 6, 37, 234, 1513, 9966, 66637, 450834, 3077713, 21153366, 146120437, 1013077434, 7042713913, 49054856766, 342163294237, 2389039544034, 16692759230113, 116696726720166, 816114147588037, 5708984335850634 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Binomial transform of A081187.

FORMULA

a(n)=12a(n-1)-35a(n-2), a(0)=1, a(1)=6. G.f.: (1-6x)/((1-5x)(1-7x)). E.g.f. exp(6x)cosh(x). a(n)=5^n/2+7^n/2.

CROSSREFS

Cf. A081189.

Sequence in context: A081570 A122898 A081912 * A154623 A196834 A005389

Adjacent sequences:  A081185 A081186 A081187 * A081189 A081190 A081191

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Mar 11 2003

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Last modified February 17 11:18 EST 2012. Contains 206011 sequences.