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Search: id:A111607
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%I A111607
%S A111607 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,
%T A111607 29,15,31,8,33,34,35,27,37,19,39,10,41,42,43,33,45,23,47,12,49,50,51,39,
%U A111607 53,27,55,14,57,58,59,45,61,31,63,16,65,66,67,51,69,35,71,18,73,74,75
%N A111607 Fourth column of A109626.
%F A111607 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
%t A111607 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}]
%Y A111607 Cf. A109626.
%Y A111607 Sequence in context: A076368 A071049 A140187 this_sequence A117531 A105555 
               A066858
%Y A111607 Adjacent sequences: A111604 A111605 A111606 this_sequence A111608 A111609 
               A111610
%K A111607 nonn
%O A111607 1,2
%A A111607 Paul D. Hanna (pauldhanna(AT)juno.com) and Robert G. Wilson v (rgwv(AT)rgwv.com), 
               Aug 01 2005

    
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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.


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