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A111618
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First lower diagonal [of A111616, I assume - N. J. A. Sloane (njas(AT)research.att.com)].
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6
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1, 3, 2, 5, 3, 7, 4, 9, 10, 11, 6, 13, 14, 15, 8, 17, 9, 19, 10, 21, 11, 23, 12, 25, 26, 27, 14, 29, 30, 31, 16, 33, 17, 35, 18, 37, 38, 39, 20, 41, 42, 43, 22, 45, 46, 47, 48, 49, 50, 51, 52, 53, 27, 55, 56, 57, 29, 59, 30, 61, 31, 63, 32, 65, 66, 67, 34, 69, 70, 71, 72, 73, 74
(list; graph; refs; listen; history; internal format)
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OFFSET
| 2,2
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COMMENTS
| The odd indexed bisection, i.e. A111618(2n+1)=2n+1.
The even indexed bisection: A111619.
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MATHEMATICA
| 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, 80}]]; g[n_, m_] := f[n][[m]]; Table[ g[n, n - 1], {n, 2, 74}]
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CROSSREFS
| Cf. A109626, A111619, A111620.
Sequence in context: A026741 A105658 A083242 * A107128 A086670 A075888
Adjacent sequences: A111615 A111616 A111617 * A111619 A111620 A111621
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KEYWORD
| nonn
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AUTHOR
| Paul D. Hanna (pauldhanna(AT)juno.com) and Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 01 2005
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