Number of nX3 0..1 arrays with no element equal 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.

A279129

Number of nX3 0..1 arrays with no element equal 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) =9a(2) =66a(3) =256a(4) =820a(5) =2551a(6) =7491a(7) =21131a(8) =57971a(9) =155551a(10) =409876a(11) =1064002a(12) =2727560a(13) =6917391a(14) =17381168a(15) =43320628a(16) =107203164a(17) =263611545a(18) =644549767a(19) =1567944409a(20) =3796630655a(21) =9154650571a(22) =21989697066a(23) =52634342562a(24) =125577952504a(25) =298716701553

External references