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Search: id:A111607
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| 1, 2, 3, 3, 5, 3, 7, 2, 9, 10, 11, 9, 13, 7, 15, 4, 17, 18, 19, 15, 21, 11, 23, 6, 25, 26, 27, 21, 29, 15, 31, 8, 33, 34, 35, 27, 37, 19, 39, 10, 41, 42, 43, 33, 45, 23, 47, 12, 49, 50, 51, 39, 53, 27, 55, 14, 57, 58, 59, 45, 61, 31, 63, 16, 65, 66, 67, 51, 69, 35, 71, 18, 73, 74, 75
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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G.f.: (1 + 2x + 3x^2 + 3x^3 + 5x^4 + 3x^5 + 7x^6 + 2x^7 + 7x^8 + 6x^9 +5x^10 + 3x^11 + 3x^12 + x^13 + x^14)/(1-x^8)^2
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MATHEMATICA
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f[n_] := f[n] = Block[{a}, a[0] = 1; a[l_] := a[l] = Block[{k = 1, s = Sum[ a[i]*x^i, {i, 0, l - 1}]}, While[ IntegerQ[ Last[ CoefficientList[ Series[(s + k*x^l)^(1/n), {x, 0, l}], x]]] != True, k++ ]; k]; Table[a[j], {j, 0, 128}]]; g[n_, m_] := f[n][[m]]; Table[g[n, 4 + 1], {n, 75}]
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CROSSREFS
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Cf. A109626.
Sequence in context: A076368 A071049 A140187 this_sequence A117531 A105555 A066858
Adjacent sequences: A111604 A111605 A111606 this_sequence A111608 A111609 A111610
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KEYWORD
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nonn
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AUTHOR
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Paul D. Hanna (pauldhanna(AT)juno.com) and Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 01 2005
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