46990

Appears in sequences

• Numbers n such that sigma(reverse(n)) = phi(n).at n=18A070856
• Numbers which when multiplied by any repunit prime Rp give a Smith number.at n=28A104167
• 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, 1), (0, 1, 1), (1, -1, 1), (1, 1, -1)}.at n=9A149025
• Products k of 4 distinct primes (or tetraprimes) such that none of k-2, k-1, k+1 and k+2 is squarefree.at n=31A364766