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

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =1a(5) =0a(6) =0a(7) =1a(8) =0a(9) =0a(10) =1a(11) =0a(12) =1a(13) =2a(14) =14a(15) =66a(16) =156a(17) =202a(18) =151a(19) =69a(20) =18a(21) =7a(22) =19a(23) =37a(24) =78a(25) =393a(26) =2608a(27) =12865a(28) =45917a(29) =121659