53811

Appears in sequences

• a(1) = 1; a(n+1) = floor((sum{k=1 to n} a(k)^3)^(1/3)).at n=55A016085
• Hankel transform of number of divisors sequence (A000005).at n=26A056225
• The number of labeled biconnected squaregraphs that contain n squares.at n=7A194089
• Consider Watanabe's 3-shift tag system {00/1011} applied to the word (100)^n; a(n) = position of the longest word in the orbit, or -1 if the orbit is unbounded.at n=39A292094
• Odd numbers k such that A173557(k) = A173557(sigma(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and sigma is the sum of divisors function.at n=43A387159