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A055589 Convolution of A049612 with A011782. 3
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

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

LINKS

Table of n, a(n) for n=0..26.

FORMULA

a(n)= T(n, 4)= A055587(n+4, 5); G.f.: x*((1-x)^4)/(1-2*x)^5.

CROSSREFS

Cf. A049600, A049612, A055587, A011782.

Sequence in context: A000393 A106392 A143132 * A318947 A320816 A239179

Adjacent sequences:  A055586 A055587 A055588 * A055590 A055591 A055592

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang May 30 2000

STATUS

approved

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Last modified March 26 16:33 EDT 2019. Contains 321510 sequences. (Running on oeis4.)