Number of length 7+2 0..n arrays with some pair in every consecutive three terms totalling exactly n.

A245876

Number of length 7+2 0..n arrays with some pair in every consecutive three terms totalling exactly n.

Terms

    a(0) =110a(1) =2967a(2) =12100a(3) =40901a(4) =97602a(5) =214315a(6) =404264a(7) =727017a(8) =1200310a(9) =1920671a(10) =2909100a(11) =4309357a(12) =6143690a(13) =8614131a(14) =11741392a(15) =15797585a(16) =20798334a(17) =27098407a(18) =34704020a(19) =44065941a(20) =55175890a(21) =68594747a(22) =84293880a(23) =102959161a(24) =124534982a(25) =149847855

External references