Number of 0..n arrays of length 7 with each element differing from at least one neighbor by something other than 1, starting with 0.
A221545
Number of 0..n arrays of length 7 with each element differing from at least one neighbor by something other than 1, starting with 0.
Terms
- a(0) =8a(1) =134a(2) =1276a(3) =6311a(4) =22466a(5) =64047a(6) =156098a(7) =338711a(8) =672066a(9) =1242191a(10) =2167442a(11) =3605703a(12) =5762306a(13) =8898671a(14) =13341666a(15) =19493687a(16) =27843458a(17) =38977551a(18) =53592626a(19) =72508391a(20) =96681282a(21) =127218863a(22) =165394946a(23) =212665431a(24) =270684866a(25) =341323727
External references
- oeis: A221545