54809

Appears in sequences

• Centered octahedral numbers (crystal ball sequence for cubic lattice).at n=34A001845
• Denominators of continued fraction convergents to sqrt(381).at n=10A041723
• Adjacent generalized Fermat primes.at n=8A118539
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, -1), (0, -1, 0), (1, 0, -1), (1, 1, 1)}.at n=9A149579
• Row sums of triangle A175009.at n=34A175006
• a(n) = (9*n^3 + 5*n)/2.at n=22A230018