171315

Appears in sequences

• Final number of terms obtained with Euler's recurrence formula when computing the sum of divisors of n.at n=22A190138
• Number of (n+2)X4 0..2 matrices with each 3X3 subblock having the same population.at n=1A224655
• T(n,k)=Number of (n+2)X(k+2) 0..2 matrices with each 3X3 subblock having the same population.at n=4A224658
• Numbers whose base-3 representation is a square when read in base 10.at n=41A267763