36464

Appears in sequences

• Numbers k such that k divides the (left) concatenation of all numbers <= k written in base 9 (most significant digit on right and removing all least significant zeros before concatenation).at n=11A029526
• Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,1.at n=5A037556
• a(n) = (2*n - 1)*(11*n^2 - 11*n + 6)/6.at n=21A063492
• Numbers k such that sopf(k) = 2*sopf(k+1), where sopf(k) = A008472.at n=31A064112
• Numbers n such that 8*10^n + 5*R_n + 2 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=5A103085
• Convolution of primes with odd primes.at n=26A209403
• Positive numbers k such that the decimal expansion of k^2 appears in the concatenation of the first k positive integers.at n=12A343536