Primes of the form 2^x+x*y+2^y, with x and y integers of any sign.

Terms

a(0) =2a(1) =3a(2) =5a(3) =13a(4) =17a(5) =89a(6) =137a(7) =157a(8) =257a(9) =523a(10) =547a(11) =2089a(12) =2659a(13) =4217a(14) =8821a(15) =16553a(16) =34981a(17) =65537a(18) =65761a(19) =262433a(20) =524309a(21) =524353a(22) =524971a(23) =2097223a(24) =2097289a(25) =2097427a(26) =2099431a(27) =8390909a(28) =10486243a(29) =35652109