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A154760
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Final digit of n!! (A006882).
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0
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1, 1, 2, 3, 8, 5, 8, 5, 4, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| For n>8: a(n)=0 if n is even, a(n)=5 if n is odd. [From Dmitry Kamenetsky (dkamen(AT)rsise.anu.edu.au), Jan 17 2009]
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EXAMPLE
| The final digit of n! is 1,2,6,4,0,0,0,0,0,0,0,0,0,...
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CROSSREFS
| Sequence in context: A110340 A183091 A089489 * A114340 A126102 A011433
Adjacent sequences: A154757 A154758 A154759 * A154761 A154762 A154763
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KEYWORD
| nonn,base
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AUTHOR
| Kousaka Hideaki (kousaka(AT)d6.dion.ne.jp), Jan 15 2009
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EXTENSIONS
| Offset corrected, more terms added. - R. J. Mathar, Jan 18 2009
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