id:A068158 - OEIS Search Results

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a(n) = floor[ n!/(R(n))! ], where R(n) = Digit reversal of n (A004086).

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1, 1, 1, 1, 1, 1, 1, 1, 1, 3628800, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1216451004088320000, 106661318400, 1, 0, 0, 0, 0, 0, 0, 0, 44208809968698509772718080000000, 1320509264105545113600000, 10178348544000, 1, 0, 0, 0, 0, 0, 0 (list; graph; listen)

	OFFSET	`1,10`
	COMMENT	`If n < R(n) then a(n) =0, n is a palindrome a(n) = 1 and for n > R(n) n!/(R(n)! = an integer.`
	EXAMPLE	`a(21) = 21! / 12! = 51090942171709440000/479001600 = 106661318400.`
	CROSSREFS	`Adjacent sequences: A068155 A068156 A068157 this_sequence A068159 A068160 A068161` `Sequence in context: A116221 A118813 A127229 this_sequence A011521 A061603 A133132`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 24 2002`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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