50540

Appears in sequences

• Number of reversible strings with n-1 beads of 2 colors. 4 beads are black. String is not palindromic.at n=36A032091
• Number of ways to place 2 nonattacking amazons (superqueens) on an n X n toroidal board.at n=18A178972
• Number of n-element subsets of [n+4] having an even sum.at n=37A282080
• Number of binary matrices with 3 distinct columns and any number of nonzero rows with n ones in every column and rows in nonincreasing lexicographic order.at n=27A331390
• Numbers which are sum of three squares of positive numbers and also 5 times of the sum of their joint products.at n=7A347969