74874

Appears in sequences

• Numbers k such that the quotient (sigma(k) + sigma(k+1) + sigma(k+2))/sigma(3*k+3) is an integer.at n=8A091292
• Numbers k such that 2*10^k + 4*R_k - 3 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=14A102952
• Number of compositions (ordered partitions) of n into at least 2 distinct positive parts.at n=32A216695