Number of length 3+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.

A246895

Number of length 3+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.

Terms

    a(0) =112a(1) =1961a(2) =12544a(3) =57585a(4) =177648a(5) =484297a(6) =1079680a(7) =2256929a(8) =4207600a(9) =7537641a(10) =12554112a(11) =20344081a(12) =31352944a(13) =47355785a(14) =68954368a(15) =98858817a(16) =137838960a(17) =189828649a(18) =255769600a(19) =341151281a(20) =447081712a(21) =580982601a(22) =744111744a(23) =946245985

External references