Lowest prime p in a ladder of 4 consecutive primes p, p+2, p+6, p+14.

Terms

a(0) =1997a(1) =2237a(2) =2267a(3) =2657a(4) =6197a(5) =6827a(6) =8087a(7) =17027a(8) =17387a(9) =19427a(10) =21017a(11) =21377a(12) =22277a(13) =22637a(14) =23057a(15) =24107a(16) =29567a(17) =37307a(18) =43397a(19) =43787a(20) =53087a(21) =55337a(22) =56807a(23) =58907a(24) =62297a(25) =65537a(26) =65837a(27) =78887a(28) =81017a(29) =82007