Number of ways to place 8 nonattacking queens on an 8 X n board.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =92a(8) =1066a(9) =7828a(10) =44148a(11) =195270a(12) =707698a(13) =2211868a(14) =6120136a(15) =15324708a(16) =35312064a(17) =75937606a(18) =153942964a(19) =296590536a(20) =546621416a(21) =968910732a(22) =1659114170a(23) =2754780934a(24) =4449361442a(25) =7009572728a(26) =10796663102a(27) =16292133888