Number of length 3 1..(n+2) arrays with no leading partial sum equal to a prime.

Terms

a(0) =1a(1) =8a(2) =15a(3) =40a(4) =49a(5) =105a(6) =163a(7) =253a(8) =307a(9) =466a(10) =540a(11) =768a(12) =997a(13) =1283a(14) =1442a(15) =1862a(16) =2051a(17) =2562a(18) =3053a(19) =3627a(20) =3936a(21) =4749a(22) =5465a(23) =6368a(24) =7230a(25) =8270a(26) =8848a(27) =10189a(28) =10805a(29) =12187