A187305 Number of 10-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions.

0, 0, 0, 3096, 44824, 187924, 505878, 1044900, 1847506, 2912204, 4254568, 5853664, 7715596, 9827696, 12192058, 14805028, 17667036, 20777536, 24136566, 27744092, 31600114, 35704632, 40057646, 44659156, 49509162, 54607664, 59954662, 65550156

Offset: 1

Author

R. H. Hardin Mar 08 2011

Keywords

• nonn

Comments

Row 10 of A187296

Links

• R. H. Hardin, Table of n, a(n) for n = 1..50

Formula

Empirical: a(n) = 124248*n^2 - 1238146*n + 2807812 for n>17