8650752

Appears in sequences

• Number of rotationally symmetric solutions for queens on n X n board.at n=36A033148
• 20-almost primes (generalization of semiprimes).at n=15A069281
• a(n) is the smallest x such that the quotient d(x)/d(x+1) equals n, where d = A000005.at n=37A080372
• Expansion of (1 - 2x + 2x^2 - x^3)/(1 - 2x)^2.at n=20A084860
• Triangle T, read by rows, where column 0 of T^m = {C(m*2^n, n), n>=0} for all m.at n=33A136470
• a(0)=7, a(n) = 2*a(n-1) + 2^(n-1) for n > 0.at n=19A159695
• Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 1 local maximum.at n=9A159721
• a(n) = composite(n)*2^(n - 3).at n=20A240135
• Median of 2^X + 2^Y where X and Y are independent random variables with B(n,1/2) distributions.at n=41A288346
• G.f. C(x) satisfies C(x)^(1/2) - S(x)^(1/2) = 1 such that C'(x)*S(x)^(1/2) = S'(x)*C(x)^(1/2) = 72*x.at n=10A299853
• a(n) is the smallest integer that has exactly n odious divisors (A227872) and n evil divisors (A356018).at n=37A356040