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

A254213

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

Terms

    a(0) =2a(1) =0a(2) =3a(3) =4a(4) =8a(5) =6a(6) =15a(7) =18a(8) =45a(9) =118a(10) =553a(11) =1706a(12) =2845a(13) =2970a(14) =4470a(15) =9426a(16) =30908a(17) =115084a(18) =350693a(19) =804152a(20) =1724453a(21) =3598260a(22) =6467166a(23) =12292306a(24) =36973565a(25) =137754308a(26) =493838258a(27) =1570992174a(28) =4107583256a(29) =8556975584

External references