First of four consecutive primes p,q,r,s such that (2*p+q)/5 and (r+2*s)/5 are prime.

Terms

a(0) =11a(1) =1151a(2) =33071a(3) =33637a(4) =55331a(5) =57637a(6) =75997a(7) =90821a(8) =97007a(9) =100151a(10) =112237a(11) =118219a(12) =123581a(13) =141629a(14) =154459a(15) =160553a(16) =165961a(17) =199247a(18) =212777a(19) =222823a(20) =288361a(21) =289511a(22) =293677a(23) =319993a(24) =329471a(25) =331697a(26) =336101a(27) =361799a(28) =364537a(29) =375371