27789

Appears in sequences

• Number of representations of n as a sum of products of pairs of positive integers, considered to be equivalent when terms or factors are reordered.at n=31A182269
• G.f. satisfies: A(x) = 1 + x*A(x)^3 + 2*x^2*A(x)^2 + x^3*A(x).at n=7A200028
• Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..2 array extended with zeros and convolved with 1,-2,1.at n=18A222147
• Largest term in row n of A261019.at n=16A261392
• Number of binary strings of length n+6 such that the smallest number whose binary representation is not visible in the string is 8.at n=11A261473
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n) + 1, where a(0) = 1, a(1) = 5, b(0) = 2, b(1) = 3, b(2) = 4, and (a(n)) and (b(n)) are increasing complementary sequences.at n=17A295959