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1, 1, 16, 1296, 331776, 207360000, 268738560000, 645241282560000, 2642908293365760000, 17340121312772751360000, 173401213127727513600000000
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| a(n) is also the determinant of the symmetric n X n matrix M defined by M(i,j) = sigma_4(gcd(i,j)) for 1 <= i,j <= n, and n>0, where sigma_4 is A001159 - Enrique Pérez Herrero, Aug 13 2011.
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MATHEMATICA
| Table[((n)!)^(4), {n, 0, 10}]
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CROSSREFS
| Cf. A000142, A001044, A000442, A036740, A010050, A009445, A134366, A134367, A134368, A134369, A134371, A134372, A134373, A134374.
Sequence in context: A007480 A186420 A163395 * A057994 A160251 A106176
Adjacent sequences: A134372 A134373 A134374 * A134376 A134377 A134378
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KEYWORD
| nonn
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AUTHOR
| Artur Jasinski (grafix(AT)csl.pl), Oct 22 2007
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