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A321628

Row sums of A321627.

1, 2, 8, 44, 308, 2660, 27764, 343604, 4948196, 81477188, 1510645556, 31133831540, 705725536868, 17441324917508, 466571232425012, 13427966856358196, 413627214916715492, 13576185998718106820, 472963964292142718516, 17429043637241263344116, 677320641352700988657764

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OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

MAPLE

b := proc(n) option remember; if n = 0 then 2 else

add(doublefactorial(2*k-1)*b(n-k), k=1..n) fi end:

a := n -> if n = 0 then return 1 else b(n) end: seq(a(n), n=0..20);

CROSSREFS

Cf. A321627, A193763.

Sequence in context: A005649 A253950 A212913 * A005363 A216234 A123307