Numbers n such that sigma(n+2) - sigma(n) = n + 2.

Terms

a(0) =1a(1) =2a(2) =22a(3) =14926a(4) =31048a(5) =69106a(6) =246262a(7) =5860168a(8) =307164670a(9) =881198662a(10) =1489455646a(11) =2386555630a(12) =8225563702a(13) =14311679062a(14) =111494234182a(15) =154357775302a(16) =299004519622a(17) =870455062822a(18) =970388922262a(19) =991817878342