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Search: id:A131039
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A131039 Expansion of (1-x)*(2*x^2-4*x+1)/(1-2*x+5*x^2-4*x^3+x^4). +0
3
1, -3, -5, 7, 26, 0, -97, -97, 265, 627, -362, -2702, -1351, 8733, 13775, -18817, -70226, 0, 262087, 262087, -716035, -1694157, 978122, 7300802, 3650401, -23596563, -37220045, 50843527, 189750626, 0, -708158977, -708158977, 1934726305, 4577611587, -2642885282, -19726764302, -9863382151 (list; graph; listen)
OFFSET

0,2

COMMENT

Unsigned bisection gives match to A002316 (Related to Bernoulli numbers). Note that all numbers in A002316 appear to be in A002531 (Numerators of continued fraction convergents to sqrt(3)) as well. a(12*n+5) = (0,0,0,0,...)

MAPLE

Floretion Algebra Multiplication Program, FAMP Code: 2tesseq['i + .5i' + .5j' + .5k' + .5e]

CROSSREFS

Cf. A131040, A131041, A131042, A002316, A002531.

Sequence in context: A045966 A146148 A098475 this_sequence A027449 A126670 A126668

Adjacent sequences: A131036 A131037 A131038 this_sequence A131040 A131041 A131042

KEYWORD

easy,sign

AUTHOR

Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Jun 11 2007

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Last modified December 2 15:58 EST 2008. Contains 150992 sequences.


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