Smallest prime p of two consecutive primes, p < q, such that gcd(p+1, q+1) = 2n.

Terms

a(0) =3a(1) =7a(2) =23a(3) =359a(4) =139a(5) =467a(6) =293a(7) =3391a(8) =1259a(9) =17519a(10) =3739a(11) =7079a(12) =12011a(13) =52639a(14) =18869a(15) =66239a(16) =77383a(17) =27143a(18) =51071a(19) =76039a(20) =119447a(21) =76163a(22) =91033a(23) =226943a(24) =206699a(25) =894451a(26) =327347a(27) =492911a(28) =399793a(29) =195599