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1, 1, 1, 2, 8, 34, 180, 1120, 8064, 65978, 604800, 6141046, 68428800, 830269440, 10897286400, 153844043294, 2324754432000, 37440781904842, 640237370572800, 11585247657984000, 221172909834240000, 4442690623626907826
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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COMMENTS
| This is the value that comes up when (all positive integers n and below multiplied together) is divided by (all positive integers n and below added together). Some terms need to be rounded, but for some terms, n! is evenly divisible by n(n+1)/2. See A060462 for these numbers.
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EXAMPLE
| a(6) = 34 because 6! = 720 and 6(6+1)/2 = 21. 720/21 = 34.2857... rounded to 34.
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CROSSREFS
| Cf. A000142, A000217, A060462.
Cf. A061370. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Dec 13 2008]
Sequence in context: A030960 A121894 A061370 * A191569 A013026 A121789
Adjacent sequences: A126325 A126326 A126327 * A126329 A126330 A126331
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KEYWORD
| nonn
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AUTHOR
| Jonathan R. Love (japanada11(AT)yahoo.ca), Mar 09 2007
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