Number of n X 3 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

A279867

Number of n X 3 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

Terms

    a(0) =0a(1) =33a(2) =176a(3) =824a(4) =3199a(5) =11983a(6) =42296a(7) =143968a(8) =476675a(9) =1543667a(10) =4909096a(11) =15379744a(12) =47578031a(13) =145603087a(14) =441441920a(15) =1327480296a(16) =3963270819a(17) =11757089555a(18) =34678442976a(19) =101761151096a(20) =297221474943a(21) =864446263551

External references