39447

Appears in sequences

• Numbers k that divide s(k), where s(1)=1, s(j)=19*s(j-1)+j.at n=29A014869
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 45 ones.at n=4A031813
• Numerators of continued fraction convergents to sqrt(731).at n=2A042406
• a(n) = (2*9^n + 3^n)/3.at n=5A082413
• a(n) = 5 + floor((1 + Sum_{j=1..n-1} a(j)) / 2).at n=22A120135
• Second pentagonal numbers that are interprime.at n=18A205881
• Numbers k>1 such that 10^phi(k) == 1 (mod k^2), where phi(n)=A000010(n).at n=5A241977
• a(n) = A273059(4n).at n=35A275916
• a(n) = n*(2*n^2 + 3), n >= 1; a(0)=1.at n=27A288534
• Number of series-reduced free pure achiral multifunctions with one atom and n positions.at n=31A317885
• Number of nonisomorphic spanning trees of the triangular snake nC_3.at n=10A374721