Number of length n reversible string structures that are not palindromic using exactly three different colors.
A327610
Number of length n reversible string structures that are not palindromic using exactly three different colors.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =4a(4) =14a(5) =49a(6) =154a(7) =496a(8) =1520a(9) =4705a(10) =14266a(11) =43384a(12) =130844a(13) =394849a(14) =1187614a(15) =3571936a(16) =10729040a(17) =32222785a(18) =96724306a(19) =290313064a(20) =871172324a(21) =2614069249a(22) =7843168774a(23) =23531688976a(24) =70598997560a(25) =211805640865a(26) =635432906746
External references
- oeis: A327610