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A111622 Where A111621(n)=2. 0
1, 3, 5, 7, 11, 15, 17, 19, 21, 23, 27, 31, 33, 35, 39, 43, 53, 57, 59, 61, 63, 67, 79, 95, 97, 101, 115, 127, 129, 131, 135, 137, 139, 143 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..34.

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, 144}]]; g[n_, m_] := f[n][[m]]; t = Table[ n/g[n, n - 1], {n, 2, 144}]; Select[ Range[143], t[[ # ]] == 2 &]

CROSSREFS

Cf. A109626, A111618.

Sequence in context: A072151 A280018 A029626 * A082418 A319899 A085493

Adjacent sequences:  A111619 A111620 A111621 * A111623 A111624 A111625

KEYWORD

nonn

AUTHOR

Paul D. Hanna and Robert G. Wilson v, Aug 01 2005

STATUS

approved

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Last modified December 5 20:45 EST 2019. Contains 329779 sequences. (Running on oeis4.)