18006

Appears in sequences

• Aliquot sequence starting at 3630.at n=7A143930
• a(n) = Least i in range [A165598(n),A165598(n+1)] for which abs(A165597(i)) gets the maximum value in that range.at n=28A165599
• Number of length 7+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth.at n=8A248544
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 158", based on the 5-celled von Neumann neighborhood.at n=36A270335
• E.g.f.: A(x) = ... x*exp(x^4) o x*exp(x^3) o x*exp(x^2) o x*exp(x), the composition of functions x*exp(x^n) for n = 1,2,3,...at n=5A277180