OFFSET
1,2
FORMULA
a(n) = ((2n-1)^(2n+1) + (2n+1)^(2n-1))/(2n)^2; n > 0.
MATHEMATICA
Table[((2 n - 1)^(2 n + 1) + (2 n + 1)^(2 n - 1))/(2 n)^2, {n, 1, 15}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Alexander Adamchuk, Dec 10 2013
STATUS
approved