Number of n element 0..3 arrays with each element the minimum of 6 adjacent elements of a random 0..3 array of n+5 elements.

A217952

Number of n element 0..3 arrays with each element the minimum of 6 adjacent elements of a random 0..3 array of n+5 elements.

Terms

    a(0) =4a(1) =16a(2) =50a(3) =130a(4) =296a(5) =610a(6) =1163a(7) =2097a(8) =3670a(9) =6434a(10) =11666a(11) =22313a(12) =44907a(13) =93206a(14) =194831a(15) =403141a(16) =818641a(17) =1628770a(18) =3184993a(19) =6157786a(20) =11854873a(21) =22877202a(22) =44459405a(23) =87168326a(24) =172249773a(25) =342083954a(26) =680463827a(27) =1351826291a(28) =2677343192a(29) =5283369867

External references