Number of length n+2 0..6 arrays with some pair in every consecutive three terms totalling exactly 6.
A245867
Number of length n+2 0..6 arrays with some pair in every consecutive three terms totalling exactly 6.
Terms
- a(0) =127a(1) =493a(2) =1579a(3) =5515a(4) =18505a(5) =63241a(6) =214315a(7) =729097a(8) =2475985a(9) =8415217a(10) =28590415a(11) =97151683a(12) =330100459a(13) =1121650903a(14) =3811203385a(15) =12950003383a(16) =44002376953a(17) =149514426895a(18) =508030458319
External references
- oeis: A245867