Number of length 5+4 0..n arrays with no disjoint pairs in any consecutive five terms having the same sum.
A247409
Number of length 5+4 0..n arrays with no disjoint pairs in any consecutive five terms having the same sum.
Terms
- a(0) =0a(1) =40a(2) =528a(3) =14456a(4) =132368a(5) =775668a(6) =3385192a(7) =13124760a(8) =41711352a(9) =123222780a(10) =322279484a(11) =779176460a(12) =1746083264a(13) =3710742916a(14) =7434986372a(15) =14291613796a(16) =26308317500a(17) =46795105776a(18) =80481695004a(19) =134719014924a(20) =219309670828
External references
- oeis: A247409