742898

Appears in sequences

• Catalan numbers minus 2.at n=13A120304
• Number of nonequivalent ways (mod D_3) to place 3 points on an n X n X n triangular grid so that no two of them are on the same row, column or diagonal.at n=25A283114
• Catalan numbers - 2 (A120304) with first three terms changed to 1,1,1.at n=13A289652
• Catalan numbers - 2 (A120304) with first four terms changed to 1,1,1,4.at n=13A289653