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Search: id:A109765
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| A109765 |
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Expansion of x/((4*x-1)*(2*x-1)*(x+1)). |
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+0
1
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| 0, 1, 5, 23, 97, 399, 1617, 6511, 26129, 104687, 419089, 1677039, 6709521, 26840815, 107368721, 429485807, 1717965073, 6871903983, 27487703313, 109950988015, 439804301585, 1759217905391, 7036873019665, 28147494874863
(list; graph; listen)
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OFFSET
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0,3
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COMMENT
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In reference to the program code given, 1baseksumseq[C*D] = A001045 (Jacobsthal sequence, disregard signs).
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FORMULA
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a(n) = 5*a(n-1) - 2*a(n-2) - 8*a(n-3), n >= 3; a(n) = (1/15)*(6*4^n-5*2^n-(-1)^n); a(n+1) + a(n) = A006516(n+1); a(n+2) - a(n) = A010036(n+1)
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PROGRAM
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Floretion Algebra Multiplication Program, FAMP Code: 1basejsumseq[C*D] with C = - 'j + 'k - j' + k' - 'ii' - 'ij' - 'ik' - 'ji' - 'ki' and D = + .5'i + .5'k - .5j' - .5k' + .5'ii' + .5'jj' + .5'jk' + .5'ki'; sumtype: sum[Y[15]] = sum[Y[ * ]], disregard signs
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CROSSREFS
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Cf. A001045, A006516, A010036, A006095.
Adjacent sequences: A109762 A109763 A109764 this_sequence A109766 A109767 A109768
Sequence in context: A028894 A140529 A055489 this_sequence A119012 A084615 A049674
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KEYWORD
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easy,nonn
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AUTHOR
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Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Aug 13 2005
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