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A107853
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G.f. x*(x-1)*(x+1)^3/((2*x^3+x^2-1)*(x^4+1)).
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2
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0, 1, 2, 1, 2, 3, 2, 7, 10, 13, 26, 33, 50, 83, 114, 183, 282, 413, 650, 977, 1474, 2275, 3426, 5223, 7978, 12077, 18426, 28033, 42578, 64883, 98642, 150039, 228410, 347325, 528490, 804145, 1223138, 1861123, 2831426, 4307399, 6553674, 9970253
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OFFSET
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0,3
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LINKS
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Table of n, a(n) for n=0..41.
Index entries for linear recurrences with constant coefficients, signature (0,1,2,-1,0,1,2).
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FORMULA
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a(n) = 2*A159287(n) + A091337(n+6).
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MATHEMATICA
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LinearRecurrence[{0, 1, 2, -1, 0, 1, 2}, {0, 1, 2, 1, 2, 3, 2}, 50] (* Harvey P. Dale, Jan 24 2018 *)
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PROG
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Floretion Algebra Multiplication Program, FAMP Code: - 2basejforzapseq[(.5i' + .5j' + .5'ki' + .5'kj')*(.5'i + .5'j + .5'ik' + .5'jk')], 1vesforzap = A000004
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CROSSREFS
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Cf. A107849, A107850, A107851, A107852, A107854.
Sequence in context: A214720 A035368 A249686 * A054758 A077876 A095056
Adjacent sequences: A107850 A107851 A107852 * A107854 A107855 A107856
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KEYWORD
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easy,nonn
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AUTHOR
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Creighton Dement, May 25 2005
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STATUS
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approved
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