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A060935 Sum of entries in n-th antidiagonal in A060854. 1
1, 2, 4, 12, 72, 1010, 36302, 3501500, 984382830, 820391106394, 2231837962830894, 19443994569352596154, 611248544067759392038426, 65374059149370152526265388842, 27613396368509694864033710442373202 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..40

MAPLE

T:= (m, n)-> (m*n)! * mul(i!/(m+i)!, i=0..n-1):

a:= n-> add (T(k, 1+n-k), k=1..n):

seq (a(n), n=1..20);  # Alois P. Heinz, Aug 06 2012

CROSSREFS

Sequence in context: A172165 A078919 A085864 * A141522 A114903 A038054

Adjacent sequences:  A060932 A060933 A060934 * A060936 A060937 A060938

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, May 06 2001

EXTENSIONS

More terms from Frank Ellermann, Jun 15 2001

STATUS

approved

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Last modified March 28 11:00 EDT 2020. Contains 333083 sequences. (Running on oeis4.)