143104

Appears in sequences

• From solution to a counting problem.at n=18A059775
• Number of ways to place 3 nonattacking kings on a 3 X n board.at n=33A172202
• a(n) = 4*a(n-1) - 6*a(n-2), with a(0)=0, a(1)=1.at n=14A190965
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A384809.at n=61A384811