Number of length 4+3 0..n arrays with no pair in any consecutive four terms totalling exactly n.

A246483

Number of length 4+3 0..n arrays with no pair in any consecutive four terms totalling exactly n.

Terms

    a(0) =2a(1) =28a(2) =644a(3) =3904a(4) =24582a(5) =91212a(6) =317576a(7) =857248a(8) =2174090a(9) =4780060a(10) =10007052a(11) =19154208a(12) =35306894a(13) =61236364a(14) =103134992a(15) =166247872a(16) =261796626a(17) =398879388a(18) =596338580a(19) =868942720a(20) =1246516502a(21) =1751814988a(22) =2429877144a(23) =3314320224

External references