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A003236 a(n) = Sum_{k=0..n} (-1)^(n-k) C(n,k)*C((k+1)^2, n).
(Formerly M3107)
1
1, 3, 24, 320, 6122, 153762, 4794664, 178788528, 7762727196, 384733667780, 21434922419504, 1326212860090560, 90227121642144424, 6694736236093168200, 538028902298395832832, 46558260925421295229568, 4316186393637505403773328 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

H. W. Gould, personal communication.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..300

Henry W. Gould, Letters to N. J. A. Sloane, Oct 1973 and Jan 1974.

CROSSREFS

Sequence in context: A138428 A047056 A264561 * A232693 A319939 A082166

Adjacent sequences:  A003233 A003234 A003235 * A003237 A003238 A003239

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Sean A. Irvine, Mar 19 2015

STATUS

approved

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Last modified February 17 02:33 EST 2019. Contains 320200 sequences. (Running on oeis4.)