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A026025
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a(n) = (n!)^2 * (1 + Sum(k=0...n-1) 1/((k+1)(k!)^2)).
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0
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1, 2, 10, 93, 1492, 37305, 1342986, 65806321, 4211604552, 341139968721, 34113996872110, 4127793621525321, 594402281499646236, 100453985573440213897, 19688981172394281923826
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Matthew M. Conroy, Home page (listed instead of email address)
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FORMULA
| a(n) = n^2*a(n-1)+n. - Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 13 2003
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CROSSREFS
| Sequence in context: A063385 A063393 A205320 * A100622 A103436 A160940
Adjacent sequences: A026022 A026023 A026024 * A026026 A026027 A026028
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KEYWORD
| easy,nonn
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AUTHOR
| Brian Wallace (wallacebrianedward(AT)yahoo.co.uk), May 18 2001
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EXTENSIONS
| Corrected and extended by Matthew M. Conroy, May 22 2001
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