Numbers n such that the sum of the divisors of n is of the form m^2+1.

Terms

a(0) =1a(1) =657a(2) =3681a(3) =10809a(4) =15777a(5) =17937a(6) =24201a(7) =28521a(8) =54657a(9) =81441a(10) =122697a(11) =154881a(12) =230481a(13) =265257a(14) =336321a(15) =346041a(16) =455337a(17) =473481a(18) =547137a(19) =613017a(20) =718857a(21) =833121a(22) =898137a(23) =1161009a(24) =1226457a(25) =1274841a(26) =1305081a(27) =1510281a(28) =1584801a(29) =1618497