Number of 4-step one or two collinear space at a time queen's tours on an n X n board summed over all starting positions.

A187029

Number of 4-step one or two collinear space at a time queen's tours on an n X n board summed over all starting positions.

Terms

    a(0) =0a(1) =24a(2) =1344a(3) =7056a(4) =19568a(5) =39348a(6) =66360a(7) =100380a(8) =141408a(9) =189444a(10) =244488a(11) =306540a(12) =375600a(13) =451668a(14) =534744a(15) =624828a(16) =721920a(17) =826020a(18) =937128a(19) =1055244a(20) =1180368a(21) =1312500a(22) =1451640a(23) =1597788a(24) =1750944a(25) =1911108a(26) =2078280a(27) =2252460a(28) =2433648a(29) =2621844

External references