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A193606 Augmentation of the triangle A193605. See Comments. 2

%I #5 Mar 30 2012 18:57:38

%S 1,1,3,1,7,17,1,12,57,127,1,18,134,531,1125,1,25,265,1556,5513,11279,

%T 1,33,470,3793,19152,62675,124837,1,42,772,8175,55297,250524,771121,

%U 1502679,1,52,1197,16087,140269,834879,3478204,10185019,19480445

%N Augmentation of the triangle A193605. See Comments.

%C For an introduction to the unary operation "augmentation" as applied to triangular arrays or sequences of polynomials, see A193091.

%e First five rows of A193606:

%e 1

%e 1...3

%e 1...7....17

%e 1...12...57....127

%e 1...18...134...531...1125

%t u[n_, k_] := Sum[Binomial[n, h], {h, 0, k}]

%t p[n_, k_] := Sum[u[n, h], {h, 0, k}]

%t Table[p[n, k], {n, 0, 12}, {k, 0, n}] (* A193695 *)

%t m[n_] := Table[If[i <= j, p[n + 1 - i, j - i], 0], {i, n}, {j, n + 1}]

%t TableForm[m[4]]

%t w[0, 0] = 1; w[1, 0] = p[1, 0]; w[1, 1] = p[1, 1];

%t v[0] = w[0, 0]; v[1] = {w[1, 0], w[1, 1]};

%t v[n_] := v[n - 1].m[n]

%t TableForm[Table[v[n], {n, 0, 6}]] (* A193606 *)

%t Flatten[Table[v[n], {n, 0, 8}]]

%Y Cf. A193605, A193091.

%K nonn,tabl

%O 0,3

%A _Clark Kimberling_, Jul 31 2011

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Last modified April 24 08:59 EDT 2024. Contains 371935 sequences. (Running on oeis4.)