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A122024
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a(n) = (3*a(n - 1)a(n - 5) - a(n - 2)*a(n - 4))/a(n - 6); a(0) = 1, a(1) = 1, a(2) = 1, a(3) = 1, a(4) = 1, a(5) = 1.
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1, 1, 1, 1, 1, 1, 2, 5, 13, 34, 76, 286, 1651, 10933, 76130, 418553, 3071419, 37191253, 597219127, 11052077737, 158194282219, 2500524791374, 60075261409487, 2150997470890553, 103505410541423890, 3957922747010968084
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,7
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MATHEMATICA
| a[n_] := a[n] = (3*a[n - 1]a[n - 5] - a[n - 2]*a[n - 4])/a[n - 6]; a[0] = 1; a[1] = 1; a[2] = 1; a[3] = 1; a[4] = 1; a[5] = 1; Table[a[n], {n, 0, 30}]
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CROSSREFS
| Cf. Somos-6 sequence A006722.
Sequence in context: A112841 A104589 A154101 * A027931 A103142 A112844
Adjacent sequences: A122021 A122022 A122023 * A122025 A122026 A122027
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KEYWORD
| nonn
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AUTHOR
| Roger Bagula (rlbagulatftn(AT)yahoo.com), Sep 12 2006
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EXTENSIONS
| Edited by N. J. A. Sloane (njas(AT)research.att.com), Sep 13 2006
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