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A001757 Expansion of an integral: central elements of rows of triangle in A059366.
(Formerly M1941 N0769)
2
1, 2, 9, 54, 450, 4500, 55125, 771750, 12502350, 225042300, 4538353050, 99843767100, 2410513805700, 62673358948200, 1762688220418125, 52880646612543750, 1698056319002793750, 2393682624966332652 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

REFERENCES

L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 167.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

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

CROSSREFS

Sequence in context: A127128 A064151 A075679 * A078455 A036074 A009363

Adjacent sequences:  A001754 A001755 A001756 * A001758 A001759 A001760

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

EXTENSIONS

More terms from Larry Reeves (larryr(AT)acm.org), Feb 08 2001

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Last modified February 14 22:30 EST 2012. Contains 205678 sequences.