A055589 Convolution of A049612 with A011782.

0, 1, 6, 26, 96, 321, 1002, 2972, 8472, 23392, 62912, 165504, 427264, 1085184, 2717184, 6718464, 16427008, 39763968, 95387648, 226951168, 535953408, 1257046016, 2929852416, 6789267456, 15648423936, 35888562176, 81927340032

Offset: 0

Author

Wolfdieter Lang May 30 2000

Keywords

• nonn
• easy

Comments

Sixth column of triangle A055587. T(n,4) of array T as in A049600.

Links

• Index entries for linear recurrences with constant coefficients, signature (10, -40, 80, -80, 32).

Crossrefs

Cf. A049600, A049612, A055587, A011782.

Formula

a(n)= T(n, 4)= A055587(n+4, 5).

G.f.: x*((1-x)^4)/(1-2*x)^5.