235290

Appears in sequences

• Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 5 X 5 X 5 subtriangle summing to 5.at n=2A154053
• Least common multiple of all p-1, where prime p divides the n-th primary pseudoperfect number A054377(n).at n=5A191975
• Numbers m such that (m'-1)' = m+1, where m' denotes the arithmetic derivative of m.at n=6A203617
• Numbers n such that 1^n + 2^n + 3^n + ... + n^n == 5 (mod n).at n=7A226963
• Numbers that are product of a second hexagonal number (A014105) and a square pyramidal numbers (A000330) in at least two ways.at n=23A306122