28074

Appears in sequences

• a(n) = round(10000*log_2(n)).at n=6A004269
• a(n) = ceiling(10000*log_2(n)).at n=6A004270
• G.f. A(x) satisfies A(x) = 1 + x*A(x*A(x)^2)^2.at n=7A143508
• Numbers k such that 459*2^k+1 is prime.at n=46A323199
• Lesser of 2 successive sphenic numbers (k, k+4) sandwiching 3 consecutive nonsquarefree numbers.at n=39A363830
• Number of subsets of {1,2,...,n} such that no two elements differ by 1, 2, or 5.at n=28A375980