Number of ways to tile an n X n X n triangular area with four 2 X 2 X 2 triangular tiles and an appropriate number (= n^2-16) of 1 X 1 X 1 tiles.

A286439

Number of ways to tile an n X n X n triangular area with four 2 X 2 X 2 triangular tiles and an appropriate number (= n^2-16) of 1 X 1 X 1 tiles.

Terms

    a(0) =0a(1) =1a(2) =25a(3) =747a(4) =7459a(5) =42983a(6) =176373a(7) =575775a(8) =1595487a(9) =3908979a(10) =8701313a(11) =17936083a(12) =34713675a(13) =63739327a(14) =111921149a(15) =189119943a(16) =309074343a(17) =490526475a(18) =758575017a(19) =1146284219a(20) =1696579123a(21) =2464458903a(22) =3519561925a(23) =4949117807a(24) =6861323439a(25) =9389181603a(26) =12694842513a(27) =16974490275

External references