Number of length 2+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.

A246894

Number of length 2+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.

Terms

    a(0) =58a(1) =673a(2) =3364a(3) =12481a(4) =33294a(5) =79345a(6) =159688a(7) =303169a(8) =521890a(9) =866881a(10) =1351788a(11) =2057473a(12) =2996854a(13) =4289041a(14) =5943184a(15) =8125825a(16) =10838538a(17) =14305249a(18) =18515380a(19) =23760961a(20) =30013918a(21) =37645873a(22) =46605144a(23) =57355201a(24) =69813874a(25) =84549505

External references