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A104579 A Padovan-Jacobsthal convolution triangle. 0
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, 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, 135, 120, 95, 84, 28, 16, 9, 0, 1, 42, 126, 200, 275, 210, 140, 112, 36, 18, 10, 0, 1, 57, 220, 381 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,7

COMMENTS

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

LINKS

Table of n, a(n) for n=0..80.

FORMULA

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

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

EXAMPLE

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

CROSSREFS

Sequence in context: A108561 A174626 A264909 * A079531 A182882 A134178

Adjacent sequences:  A104576 A104577 A104578 * A104580 A104581 A104582

KEYWORD

easy,nonn,tabl

AUTHOR

Paul Barry, Mar 16 2005

STATUS

approved

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Last modified October 18 14:04 EDT 2019. Contains 328161 sequences. (Running on oeis4.)