Number of length 4 1..(n+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal.
A254221
Number of length 4 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) =4a(3) =22a(4) =24a(5) =96a(6) =168a(7) =388a(8) =490a(9) =1024a(10) =1168a(11) =2138a(12) =3000a(13) =4554a(14) =5084a(15) =7872a(16) =8570a(17) =12358a(18) =15532a(19) =20538a(20) =22120a(21) =30338a(22) =35972a(23) =45928a(24) =54068a(25) =66830a(26) =71348a(27) =90658a(28) =95374a(29) =115162
External references
- oeis: A254221