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

A246740

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

Terms

    a(0) =2a(1) =22a(2) =548a(3) =2884a(4) =18966a(5) =66378a(6) =241544a(7) =643048a(8) =1687850a(9) =3716830a(10) =7980972a(11) =15368172a(12) =28868798a(13) =50412754a(14) =86141456a(15) =139758928a(16) =222590034a(17) =341128998a(18) =514651700a(19) =753789460a(20) =1089386342a(21) =1537935322a(22) =2146429848a(23) =2939373624a(24) =3985569146a(25) =5320151278a(26) =7040584124a(27) =9195772348

External references