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

A245873

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

Terms

    a(0) =26a(1) =239a(2) =676a(3) =1629a(4) =3102a(5) =5515a(6) =8840a(7) =13625a(8) =19810a(9) =28071a(10) =38316a(11) =51349a(12) =67046a(13) =86339a(14) =109072a(15) =136305a(16) =167850a(17) =204895a(18) =247220a(19) =296141a(20) =351406a(21) =414459a(22) =485016a(23) =564649a(24) =653042a(25) =751895a(26) =860860a(27) =981765a(28) =1114230a(29) =1260211

External references