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A054778 5n*(5n-1)*(5n-2)*(5n-3)*(5n-4) +0
1
0, 120, 30240, 360360, 1860480, 6375600, 17100720, 38955840, 78960960, 146611080, 254251200, 417451320, 655381440, 991186560, 1452361680, 2071126800, 2884801920, 3936182040, 5273912160, 6952862280, 9034502400 (list; graph; listen)
OFFSET

0,2
FORMULA

a(n)=A052787(5n)

CROSSREFS

Sequence in context: A121012 A105188 A104008 this_sequence A027493 A010798 A006176

Adjacent sequences: A054775 A054776 A054777 this_sequence A054779 A054780 A054781

KEYWORD

easy,nonn

AUTHOR

Henry Bottomley (se16(AT)btinternet.com), May 19 2000

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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