A154682 - OEIS

%I #13 Dec 16 2013 00:00:45

%S 0,4,368,94932,45136576,33739007300,36314872537968,53132088082450132,

%T 101388548387203175168,244552822542936127033092,

%U 727457992333704231799337200,2616052459228913777816325459284,11187876119071565503348037263205568

%N (2n-1)^(2n+1) + (2n+1)^(2n-1).

%C All the terms are divisible by 4.

%C a(n) is divisible by (2n)^2 for n>0. a(n) = (2n)^2 * A233446(n) for n>0. - _Alexander Adamchuk_, Dec 10 2013

%F a(n) = (2n-1)^(2n+1) + (2n+1)^(2n-1); n>=0.

%Y First differences of A154569. Cf. A233446.

%K nonn

%O 0,2

%A Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 14 2009