Number of length 7 1..(n+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal.
A254224
Number of length 7 1..(n+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal.
Terms
- a(0) =0a(1) =2a(2) =15a(3) =383a(4) =633a(5) =6490a(6) =18214a(7) =60168a(8) =97089a(9) =296955a(10) =420163a(11) =1046085a(12) =1799943a(13) =3545675a(14) =4664339a(15) =9251052a(16) =11630683a(17) =20703803a(18) =29730723a(19) =47075466a(20) =56991009a(21) =93151404a(22) =122440340a(23) =182865306a(24) =239287220a(25) =341720757a(26) =401640735a(27) =596658745
External references
- oeis: A254224