First of four consecutive primes p,q,r,s such that (2*p+q)/5, (q+r)/10 and (r+2*s)/5 are prime.

Terms

a(0) =11a(1) =2696717a(2) =3500381a(3) =3989903a(4) =4515113a(5) =8164073a(6) =12451013a(7) =18793013a(8) =23567267a(9) =24057713a(10) =30312409a(11) =36391853a(12) =44569853a(13) =45657881a(14) =53442343a(15) =54721253a(16) =54944761a(17) =56652203a(18) =63993803a(19) =76763081a(20) =90662303a(21) =92889127a(22) =94670143a(23) =105790973a(24) =106339481a(25) =108988223a(26) =117213871a(27) =118802533a(28) =130741007a(29) =145543523