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A111629 T(3n, n)/n of A109626. 1
1, 3, 3, 1, 3, 3, 3, 3, 3, 1, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 3, 3, 3, 1, 3, 3, 1, 3, 3, 2, 3, 3, 1, 3, 3, 3, 3, 3, 2, 3, 3, 1, 3, 3, 2, 3, 3, 2, 3, 3, 1, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A sequence of just 1's, 2's and 3's.

LINKS

Table of n, a(n) for n=1..53.

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, 128}]]; g[n_, m_] := f[n][[m]]; Table[ g[3n, n]/n, {n, 53}]

CROSSREFS

Cf. A109626.

Sequence in context: A321129 A278265 A171369 * A083953 A066400 A125562

Adjacent sequences:  A111626 A111627 A111628 * A111630 A111631 A111632

KEYWORD

nonn

AUTHOR

Paul D. Hanna and Robert G. Wilson v, Aug 02 2005

STATUS

approved

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Last modified December 5 10:11 EST 2021. Contains 349543 sequences. (Running on oeis4.)