Integers m such that 2*m^k + 1, for k = 2..7, are prime.

Terms

a(0) =1a(1) =3490575a(2) =83972646a(3) =414180489a(4) =476072025a(5) =1881147720a(6) =3020243916a(7) =3188924769a(8) =3285167214a(9) =3543143220a(10) =6593858205a(11) =8239349955a(12) =10914074124a(13) =14102235060a(14) =15455042889a(15) =16196415300a(16) =16588528539a(17) =16636093485a(18) =17688635511a(19) =17929182270a(20) =18997337436a(21) =19290317670a(22) =19347263739