Greatest prime factor of n^n + (n+1)^(n+1).

Terms

a(0) =2a(1) =5a(2) =31a(3) =283a(4) =23a(5) =743a(6) =331a(7) =1600069a(8) =410353a(9) =60042893a(10) =8969a(11) =7438489991a(12) =116803a(13) =4879633159a(14) =61215157711a(15) =338142271a(17) =45072130459