19974

Appears in sequences

• n! times the volume of the polytope x_i >= 0 for 1 <= i <= n and x_i + x_{i+1} + x_{i+2} <= 1 for 1 <= i <= n-2.at n=10A096402
• Difference between number of semiprimes <= 10^n and the asymptotic approximation round(10^n*loglog(10^n)/log(10^n)).at n=6A115854
• Number of binary strings of length n with equal numbers of 00000 and 01010 substrings.at n=15A164185
• G.f.: A(x) = exp( Sum_{n>=1} 2^n * x^n/(n*(1+x^n)) ).at n=15A165941
• Number of 7's in the last section of the set of partitions of n.at n=51A206557
• Sum of the largest parts of the partitions of 4n into 4 parts.at n=11A239667
• Least integer m > 0 with pi(m*n) = sigma(m), where sigma(m) is the sum of all positive divisors of m.at n=22A247603
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 110", based on the 5-celled von Neumann neighborhood.at n=40A270170
• Sum of the largest parts of the partitions of n into 4 parts.at n=48A308760
• E.g.f. satisfies A(x) = 1/(1 + A(x) * log(1 - x*A(x)))^2.at n=4A377492