Number of length n 1..(4+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal.
A254214
Number of length n 1..(4+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal.
Terms
- a(0) =3a(1) =2a(2) =11a(3) =22a(4) =56a(5) =136a(6) =383a(7) =1070a(8) =3897a(9) =13372a(10) =36290a(11) =91998a(12) =263764a(13) =898044a(14) =3423582a(15) =12431962a(16) =40311611a(17) =119109004a(18) =342803738a(19) =1087179458a(20) =4009074487a(21) =15810174070a(22) =60200487014a(23) =208013211868a(24) =641452364953
External references
- oeis: A254214