1572840

Appears in sequences

• a(1) = 5, a(n) = sigma(a(n-1)).at n=14A051572
• a(n) = sigma^n(n), where sigma^n denotes functional iteration.at n=11A090896
• a(n) = sigma(n*2^n).at n=14A176311
• a(n) = 48*2^n - 24.at n=15A305065