62521

Appears in sequences

• Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,1 5,0 5,1 6,0 polyhexes in any orientation on a planar nXnXn triangular grid.at n=8A155418
• Numbers k that are the products of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15, 32*k-31 and 64*k-63 are also products of two distinct primes.at n=28A177215
• Numbers k that are the products of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15, 32*k-31, 64*k-63 and 128*k-127 are also products of two distinct primes.at n=7A177216
• The products k of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15, 32*k-31, 64*k-63, 128*k-127 and 256*k-255 are also products of two distinct primes.at n=4A177217
• Number of distinct quintic residues x^5 (mod 5^n), x=0..5^n-1.at n=8A365104