187849

Appears in sequences

• a(n) = n-th multiple of n with digit sum n.at n=36A082260
• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-0100-1111-0010 pattern in any orientation.at n=13A147028
• a(n) is the (2n)-th term of the n-fold self-convolution of the Euler totient function phi.at n=9A340994