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Search: id:A108210
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| A108210 |
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Let M[n] be the 2 X 2 matrix {{0, -3}, {(n - 1), 5*(n - 1)}} and let v[1] = {0, 1}', v[n] = M[n]*v[n - 1]'. Then a[n] is the first entry of v[n]. |
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+0
1
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| 0, 3, 15, 132, 1845, 35316, 855225, 25021062, 857777445, 33710592312, 1493816663025, 73679515381890, 4003077396124125, 237532181213699460, 15283471760441624025, 1059866671619938304430, 78802244142275499751125
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Derangement-type quadratic Markov chain.
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MATHEMATICA
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M[n_] := {{0, -3}, {(n - 1), 5*(n - 1)}} v[1] = {0, 1} v[n_] := v[n] = M[n].v[n - 1] a = Table[Abs[v[n][[1]]], {n, 1, 25}]
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CROSSREFS
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Cf. A000166.
Sequence in context: A075475 A074241 A117694 this_sequence A006717 A059861 A030539
Adjacent sequences: A108207 A108208 A108209 this_sequence A108211 A108212 A108213
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KEYWORD
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nonn
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AUTHOR
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Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Jun 15 2005
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EXTENSIONS
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Edited by njas, Mar 29 2007. The prime indicates transposition. Possible M should be transposed too, the Mathematica code is not clear to me.
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