72732

Appears in sequences

• Treated as strings, phi(n) is a substring of sigma(n).at n=32A074452
• Numbers n such that sigma(n) = 10*phi(n) (where sigma=A000203, phi=A000010).at n=13A171256
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 611", based on the 5-celled von Neumann neighborhood.at n=39A273214
• a(n) = 1/(n + 1)^2 * Sum_{k = 1..n+1} (k^4)*binomial(n+1, k)^2.at n=7A375177