104377

Appears in sequences

• Numbers of the form m = p1 * p2 * p3 * p4 where for each d|m we have (d+m/d)/2 prime and p1 < p2 < p3 < p4 each prime.at n=17A128285
• Number of planar n X n X n binary triangular grids with no more than 5 ones in any 5 X 5 X 5 subtriangle.at n=6A153539
• Triangle t(n,m) = p(n)/ (p(m)*p(n-m) ) read by rows, where p(n>=1) = 1, -1, 2, 10, 10, -160, -2080,.. are partial products of A106852.at n=59A177694
• Positions of incrementally largest terms in continued fraction for Copeland-Erdős constant.at n=15A224890
• Composite squarefree numbers n such that p-tau(n) divides n-sigma(n), where p are the prime factors of n, tau(n) = A000005(n) and sigma(n) = A000203(n).at n=10A229273
• All integers k that can produce a closed walk in an equilateral triangular lattice via noncongruent primitive k-length diagonals, in ascending order.at n=1A387031