165751

Appears in sequences

• a(n) is the smallest number m such that phi(10^n + m) = 10^n.at n=7A097650
• Successive powers of the matrix A=[1,2;3,4] written by rows in groups of 4.at n=28A100638
• a(n) = 5*a(n-1) + 2*a(n-2), n > 1; a(0) = a(1) = 1.at n=8A124610
• a(n) = 1 + Sum_{k=1..n, j=1..k} binomial(n,k)*binomial(n,j)*|Stirling_1(k,j)|*j!.at n=6A376766