215087

Properties

Appears in sequences

• Largest prime factor of Stirling numbers of first kind s(n,2) = A000254(n).at n=25A120299
• 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, -1, 1), (-1, 0, -1), (0, 1, 1), (1, -1, -1)}.at n=13A148064
• Largest prime factor of A001008(n), numerator of n-th harmonic number; a(1) = 1.at n=26A308971
• Prime numbersat n=19217