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A104579 A Padovan-Jacobsthal convolution triangle. 0

%I #8 Jan 08 2014 15:01:25

%S 1,0,1,1,0,1,2,2,0,1,1,4,3,0,1,4,3,6,4,0,1,5,12,6,8,5,0,1,6,16,24,10,

%T 10,6,0,1,13,24,34,40,15,12,7,0,1,16,53,60,60,60,21,14,8,0,1,25,72,

%U 135,120,95,84,28,16,9,0,1,42,126,200,275,210,140,112,36,18,10,0,1,57,220,381

%N A Padovan-Jacobsthal convolution triangle.

%C First column is A052947. Row sums are A077947. Diagonal sums are A052907.

%F Riordan array (1/(1-x^2-2x^3), x/(1-x^2-2x^3))

%F T(n,k) = T(n-1,k-1)+T(n-2,k)+2*T(n-3,k), T(0,0)=1, T(n,k)=0 if k>n or if k<0. - _Philippe Deléham_, Jan 08 2014

%e Rows begin {1},{0,1},{1,0,1},{2,2,0,1},{1,4,3,0,1},{4,3,6,4,0,1},..

%K easy,nonn,tabl

%O 0,7

%A _Paul Barry_, Mar 16 2005

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)