47523

Appears in sequences

• Numbers k that have no zero digits and such that both k+1 and (product of digits of k) + 1 are squares.at n=21A081990
• Numbers n such that n+1 and phi(n)+1 are both perfect squares.at n=28A089952
• 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), (0, 0, 1), (0, 1, 0), (1, 0, 0)}.at n=9A151029
• Number of binary strings of length n with no substrings equal to 0001 0010 or 1010.at n=17A164449
• Simple continued fraction expansion of product {k >= 0} (1 - 2*(N - sqrt(N^2-1))^(4*k+3))/(1 - 2*(N - sqrt(N^2-1))^(4*k+1)) at N = 5.at n=9A221195
• Squarefree integers m > 1 such that if prime p divides m, then s_p(m) >= p and s_p(m) == 3 (mod p-1), where s_p(m) is the sum of the base p digits of m.at n=9A324405
• Indices of vertex points of the upper convex hull of the squarefree number graph.at n=8A339806
• Numbers k such that the two perfect powers immediately adjacent to k^2 both have exponents greater than 2.at n=30A340643