18467

Appears in sequences

• a(n) = A048141(3*n).at n=52A051061
• Average of terms of n-th row of A077321.at n=42A077325
• Pseudo-random numbers: MS C 6.0 version.at n=1A084275
• Composite numbers such that all divisors >1 have the same number of 1's in binary representation.at n=36A089042
• a(n) = smallest semiprime s such that s + n is the next semiprime and there is no prime between s and s + n.at n=10A133478
• Positive integers of the form (6*m^2 + 1)/11.at n=33A179337
• Total number of maximal supersolvable subgroups of the symmetric group, counting conjugates as distinct.at n=9A218956
• Total number of maximal supersolvable subgroups of the alternating group, counting conjugates as distinct.at n=9A218961
• G.f.: A(x) = Sum_{n>=0} x^n / (1 - x^n - x^(2*n))^n.at n=22A223547
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 443", based on the 5-celled von Neumann neighborhood.at n=28A272227