31555

Appears in sequences

• Decimal part of cube root of a(n) starts with 6: first term of runs.at n=29A034132
• Numbers k such that 7^k - 5^k - 1 is prime.at n=14A180744
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 603", based on the 5-celled von Neumann neighborhood.at n=30A273173
• Number of FF-equivalence classes of Łukasiewicz paths. Łukasiewicz paths are P-equivalent iff the positions of pattern P are identical in these paths.at n=19A302483
• a(n) = coefficient of x^n, n >= 1, in A(x) such that: A(x)^2 = A( x^2/(1 - 4*x - 4*x^2) ) * sqrt(1 - 4*x - 4*x^2).at n=8A357785
• Number of powerful numbers (in A001694) that do not exceed primorial A002110(n).at n=9A380254