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A014609 (5n)!/(5!^n). 2
1, 1, 252, 756756, 11732745024, 623360743125120, 88832646059788350720, 28837919555681211870935040, 18975581770994682860770223800320, 23183587808948692737291767860055162880 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

COMMENTS

a(n) is also the constant term in product 1 <= i,j <= n, i different from j (1 - x_i/x_j)^5. - Sharon Sela (sharonsela(AT)hotmail.com), Feb 18 2002

REFERENCES

G. E. Andrews, R. Askey and R. Roy, Special Functions, Cambridge University Press, 1998.

PROG

(PARI) a(n)=if(n<0, 0, (5*n)!/120^n)

CROSSREFS

Cf. A000680, A014606, A014608.

Sequence in context: A203062 A177302 A177303 * A172557 A068275 A068287

Adjacent sequences:  A014606 A014607 A014608 * A014610 A014611 A014612

KEYWORD

nonn

AUTHOR

BjornE (mdeans(AT)algonet.se)

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Last modified February 14 08:49 EST 2012. Contains 205614 sequences.