Number of length n+4 0..2 arrays with some disjoint pairs in every consecutive five terms having the same sum.
A247921
Number of length n+4 0..2 arrays with some disjoint pairs in every consecutive five terms having the same sum.
Terms
- a(0) =203a(1) =529a(2) =1387a(3) =3649a(4) =9611a(5) =25265a(6) =66443a(7) =174817a(8) =460139a(9) =1211409a(10) =3189259a(11) =8396641a(12) =22107499a(13) =58209297a(14) =153270315a(15) =403580257a(16) =1062688075a(17) =2798238641a(18) =7368281835a(19) =19402138145a(20) =51089798827a(21) =134530145105a(22) =354246523595
External references
- oeis: A247921