Number of 5-step one or two space at a time rook's tours on an n X n board summed over all starting positions.

A187290

Number of 5-step one or two space at a time rook's tours on an n X n board summed over all starting positions.

Terms

    a(0) =0a(1) =0a(2) =720a(3) =4576a(4) =13640a(5) =28224a(6) =48232a(7) =73408a(8) =103692a(9) =139056a(10) =179500a(11) =225024a(12) =275628a(13) =331312a(14) =392076a(15) =457920a(16) =528844a(17) =604848a(18) =685932a(19) =772096a(20) =863340a(21) =959664a(22) =1061068a(23) =1167552a(24) =1279116a(25) =1395760a(26) =1517484a(27) =1644288a(28) =1776172a(29) =1913136

External references