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

Terms

a(0) =6a(1) =126a(2) =421a(3) =3001a(4) =5604a(5) =20393a(6) =45472a(7) =102595a(8) =161277a(9) =338402a(10) =489034a(11) =893944a(12) =1412682a(13) =2264545a(14) =3019845a(15) =4792281a(16) =6143391a(17) =9149646a(18) =12553350a(19) =17386054a(20) =21421963a(21) =30096986a(22) =38927373a(23) =51682575a(24) =65462507a(25) =84502439a(26) =100115923