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A154682
(2n-1)^(2n+1) + (2n+1)^(2n-1).
3
0, 4, 368, 94932, 45136576, 33739007300, 36314872537968, 53132088082450132, 101388548387203175168, 244552822542936127033092, 727457992333704231799337200, 2616052459228913777816325459284, 11187876119071565503348037263205568
OFFSET
0,2
COMMENTS
All the terms are divisible by 4.
a(n) is divisible by (2n)^2 for n>0. a(n) = (2n)^2 * A233446(n) for n>0. - Alexander Adamchuk, Dec 10 2013
FORMULA
a(n) = (2n-1)^(2n+1) + (2n+1)^(2n-1); n>=0.
CROSSREFS
First differences of A154569. Cf. A233446.
Sequence in context: A109760 A051181 A326996 * A292195 A154569 A038015
KEYWORD
nonn
AUTHOR
Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 14 2009
STATUS
approved