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Search: id:A093380
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A093380 Expansion of (1+4x+x^2-10x^3)/((1-x)(1-x-2x^2)). +0
2
1, 6, 14, 22, 46, 86, 174, 342, 686, 1366, 2734, 5462, 10926, 21846, 43694, 87382, 174766, 349526, 699054, 1398102, 2796206, 5592406, 11184814, 22369622, 44739246, 89478486, 178956974, 357913942, 715827886, 1431655766, 2863311534 (list; graph; listen)
OFFSET

0,2

COMMENT

Second binomial transform is A093381.

FORMULA

a(n)=2-5*0^n+4(2*2^n/3+(-1)^n/3); a(n)=2-5*0^n+4*A001045(n+1).

CROSSREFS

Sequence in context: A043445 A017137 A079797 this_sequence A123228 A015832 A084583

Adjacent sequences: A093377 A093378 A093379 this_sequence A093381 A093382 A093383

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Apr 28 2004

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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.


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