27033

Appears in sequences

• Numbers whose base-4 representation contains exactly four 1's and four 2's.at n=29A045109
• Number of permutations of length n which avoid the patterns 1243, 4132, 4321.at n=11A116771
• Expansion of Sum_{i>=0} x^(2^i)/(1 - x^(2^i)) / Product_{j>=0} (1 - x^(2^j)).at n=55A281688
• Numbers k such that k![10]-2 is prime, where k![10] is the ten-fold multifactorial.at n=64A283559
• Odd semiprimes p*q, such that Stern polynomial B(p*q,x) is a product of B(p,x) and B(q,x).at n=51A391256