Number of 6-turn bishop's tours on an n X n board summed over all starting positions.

A188781

Number of 6-turn bishop's tours on an n X n board summed over all starting positions.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =840a(4) =15824a(5) =112680a(6) =516160a(7) =1778608a(8) =5082912a(9) =12622640a(10) =28225472a(11) =58013112a(12) =111476080a(13) =202472856a(14) =350897664a(15) =584067552a(16) =939135552a(17) =1464903648a(18) =2225144448a(19) =3300867240a(20) =4794722064a(21) =6833735304a(22) =9574980800a(23) =13208790672

External references