Lower prime of a difference of 20 between consecutive primes.

Terms

a(0) =887a(1) =1637a(2) =3089a(3) =3413a(4) =3947a(5) =5717a(6) =5903a(7) =5987a(8) =6803a(9) =7649a(10) =8243a(11) =8543a(12) =8783a(13) =8867a(14) =9257a(15) =10223a(16) =10433a(17) =10667a(18) =11027a(19) =11093a(20) =11177a(21) =11447a(22) =11597a(23) =11657a(24) =11867a(25) =11987a(26) =13127a(27) =13421a(28) =13649a(29) =14087