64172

Appears in sequences

• Numbers that are the sum of 9 positive 10th powers.at n=15A004809
• a(n) is the nearest integer to sqrt(pi(10^n)) (see A006880).at n=11A221205
• Indices of primes in the tribonacci-like sequence, A214825.at n=35A230016
• a(n) = Sum_{-n<i<n, -n<j<n, gcd{i,j}=1} (n-|i|)*(n-|j|).at n=17A331771
• Triangle read by rows: T(n,m) (n >= m >= 1) = number of edges in the graph formed by drawing the line segments connecting any two of the (n+1) X (m+1) lattice points in an n X m grid of squares.at n=20A333278