40882

Appears in sequences

• a(n) is the 10^n-th semiprime.at n=4A114125
• Numbers k such that phi(k) = sigma(phi(phi(k))).at n=9A115448
• 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, 1), (-1, 0, 0), (0, -1, 1), (0, 1, -1), (1, 1, 0)}.at n=9A149275
• Number of permutations of 1..n containing the relative rank sequence { 1324657 } at any spacing.at n=3A159177