Numbers k such that k^2 + 1 divides 2^k + 4.

Terms

a(0) =0a(1) =1a(2) =8a(3) =28a(4) =32a(5) =128a(6) =2048a(7) =8192a(8) =23948a(9) =131072a(10) =524288a(11) =8388608a(12) =536870912a(13) =2147483648a(14) =137438953472