A005723 Quadrinomial coefficients. (Formerly M4872)

1, 12, 155, 2128, 30276, 440484, 6506786, 97181760, 1463609356, 22187304112, 338118529539, 5175023913008, 79492847013100, 1224838471521240, 18922450356489780, 293003808610433280, 4546150487318508156, 70662280030419277200, 1100069396653853657564

Offset

1,2

References

L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 78.

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

Links

Table of n, a(n) for n=1..19.

R. K. Guy, Letter to N. J. A. Sloane, 1987

Crossrefs

Bisection of A005190.

Sequence in context: A015612 A085260 A082173 * A097259 A158546 A110216

Adjacent sequences: A005720 A005721 A005722 * A005724 A005725 A005726

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved