219962

Appears in sequences

• Number of ways to place 3 nonattacking wazirs on a 3 X n board.at n=37A172229
• a(n) is the number m such that f(sqrt(n)) is in the field Q(sqrt(m)), where f(x) is defined from the continued fraction x = [c(0),c(1),...] as [c(0)+2, c(1)+2,...].at n=12A229958
• Number of achiral series-parallel networks with n elements and without multiple unit elements in parallel.at n=20A339293