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A129346 a(2n) = A100525(n), a(2n+1) = A001653(n+1); a Pellian-related sequence. 1
4, 5, 22, 29, 128, 169, 746, 985, 4348, 5741, 25342, 33461, 147704, 195025, 860882, 1136689, 5017588, 6625109, 29244646, 38613965, 170450288, 225058681, 993457082, 1311738121, 5790292204, 7645370045, 33748296142, 44560482149 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

COMMENTS

Summation with of -a(n) and A129345 returns twice Pell numbers A000129 (apart from signs; starting from 2nd term of A000129).

FORMULA

Generating function (4+5*x-2*x^2-x^3)/((x^2-2*x-1)*(x^2+2*x-1)).

CROSSREFS

Cf. A129345, A000129, A001542, A038761.

Sequence in context: A178625 A091130 A141447 * A176957 A010302 A171885

Adjacent sequences:  A129343 A129344 A129345 * A129347 A129348 A129349

KEYWORD

easy,nonn

AUTHOR

Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Apr 10 2007

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Last modified February 14 18:09 EST 2012. Contains 205663 sequences.