In chess, the number of checkmate dual-free proof games in n plies.

A126685

In chess, the number of checkmate dual-free proof games in n plies.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =3a(6) =51a(7) =1106a(8) =3813a(9) =47300a(10) =216420a(11) =2057581a(12) =10276981a(13) =74358924

External references