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A032100 "BHK" (reversible, identity, unlabeled) transform of 1,3,5,7... +0
1
1, 3, 8, 18, 54, 152, 472, 1410, 4310, 12952, 39144, 117554, 353590, 1061208, 3186488, 9560866, 28691286, 86078168, 258260680, 774795090, 2324463926, 6973431064, 20920529304, 62761705922, 188285826262, 564857832984 (list; graph; listen)
OFFSET

1,2

LINKS

C. G. Bower, Transforms (2)

FORMULA

G.f.: (3x^6-4x^5+11x^4+2x^3-3x^2-2x+1)/[(1-3x)(1-3x^2)(1-x)^2].

CROSSREFS

Sequence in context: A066143 A110045 A108931 this_sequence A023371 A124086 A091109

Adjacent sequences: A032097 A032098 A032099 this_sequence A032101 A032102 A032103

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net)

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.


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