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A111615
Third upper diagonal of the array in A109626.
3
1, 2, 3, 4, 5, 3, 7, 8, 9, 5, 11, 12, 13, 14, 15, 16, 17, 9, 19, 10, 21, 11, 23, 24, 25, 26, 27, 28, 29, 15, 31, 32, 33, 17, 35, 18, 37, 19, 39, 40, 41, 42, 43, 22, 45, 46, 47, 48, 49, 25, 51, 26, 53, 54, 55, 28, 57, 29, 59, 60, 61, 31, 63, 64, 65, 66, 67, 68, 69, 70, 71, 36, 73
OFFSET
1,2
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 + 3], {n, 74}]
CROSSREFS
Cf. A109626.
Sequence in context: A235602 A304180 A327498 * A358668 A348401 A324932
KEYWORD
nonn
AUTHOR
STATUS
approved