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Search: id:A014608
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| 1, 1, 70, 34650, 63063000, 305540235000, 3246670537110000, 66475579247327250000, 2390461829733887910000000, 140810154080474667338550000000, 12868639981414579848070084500000000
(list; graph; listen)
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OFFSET
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0,3
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COMMENT
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a(n) is also the constant term in product 1 <= i,j <= n, i different from j (1 - x_i/x_j)^4. - Sharon Sela (sharonsela(AT)hotmail.com), Feb 16 2002
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REFERENCES
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G. E. Andrews, R. Askey and R. Roy, Special Functions, Cambridge University Press, 1998.
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PROGRAM
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(PARI) a(n)=if(n<0, 0, (4*n)!/24^n)
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CROSSREFS
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Cf. A000680, A014606.
Sequence in context: A004109 A002829 A005983 this_sequence A075405 A066789 A103165
Adjacent sequences: A014605 A014606 A014607 this_sequence A014609 A014610 A014611
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KEYWORD
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nonn
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AUTHOR
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BjornE (mdeans(AT)algonet.se)
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