193720086

Appears in sequences

• Bending a piece of wire of length n+1 (configurations that can only be brought into coincidence by turning the figure over are counted as different).at n=18A001444
• a(n) = 3^n*(3^n + 1)/2.at n=9A025551
• Number of reversible strings with n beads of 3 colors.at n=18A032120
• a(n) = (n^6 + n^3)/2.at n=27A071232
• a(n) = n^9*(n^9 + 1)/2.at n=3A170791
• Least triangular number that is the product of n triangular numbers greater than 1.at n=9A212616
• Number of inequivalent height 1 degree n polynomials with nonzero constant term.at n=18A323845