Number of length 6 1..(n+2) arrays with no leading or trailing partial sum equal to a prime.

Terms

a(0) =0a(1) =27a(2) =47a(3) =610a(4) =769a(5) =4353a(6) =9126a(7) =25389a(8) =33798a(9) =85437a(10) =105502a(11) =224414a(12) =342993a(13) =608338a(14) =731220a(15) =1297874a(16) =1513366a(17) =2471660a(18) =3316174a(19) =4892872a(20) =5594456a(21) =8495902a(22) =10580268a(23) =14864909a(24) =18500679a(25) =24975320a(26) =28034979a(27) =39173178a(28) =43315043a(29) =56273764