Numbers k such that 25*2^k+1 is prime.

Terms

a(0) =2a(1) =4a(2) =6a(3) =10a(4) =20a(5) =22a(6) =52a(7) =64a(8) =78a(9) =184a(10) =232a(11) =268a(12) =340a(13) =448a(14) =554a(15) =664a(16) =740a(17) =748a(18) =1280a(19) =1328a(20) =1640a(21) =3314a(22) =3904a(23) =3938a(24) =5152a(25) =9522a(26) =57488a(27) =66872a(28) =148060a(29) =154254