Number of 7-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.

A187302

Number of 7-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.

Terms

    a(0) =0a(1) =0a(2) =108a(3) =1368a(4) =6264a(5) =15596a(6) =31172a(7) =52256a(8) =79634a(9) =112568a(10) =151266a(11) =195512a(12) =245332a(13) =300704a(14) =361628a(15) =428104a(16) =500132a(17) =577712a(18) =660844a(19) =749528a(20) =843764a(21) =943552a(22) =1048892a(23) =1159784a(24) =1276228a(25) =1398224a(26) =1525772a(27) =1658872a(28) =1797524a(29) =1941728

External references