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A208652 Product{i*C(n,i) : 1<=i<=floor[(n+1)/2]}. 4
1, 2, 18, 48, 3000, 10800, 4321800, 21073920, 51849745920, 342921600000, 5062554438480000, 45444644517888000, 3960533401513405516800, 48272757747179554068480, 24547182197052103038450000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Used, along with A208653, to count palindromic paths in A208654.

LINKS

Table of n, a(n) for n=1..15.

MATHEMATICA

m[n_]:=Floor[(n+1)/2]; z=21;

g[n_]:=Product[i*Binomial[n, i], {i, 1, m[n]}]

Table[g[n], {n, 1, z}] (* A208652 *)

CROSSREFS

Cf. A208653, A208654.

Sequence in context: A126909 A139268 A052681 * A223469 A048910 A077591

Adjacent sequences:  A208649 A208650 A208651 * A208653 A208654 A208655

KEYWORD

nonn

AUTHOR

Clark Kimberling, Mar 02 2012

STATUS

approved

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Last modified April 24 19:49 EDT 2019. Contains 322446 sequences. (Running on oeis4.)