330000

Appears in sequences

• G.f.: A(x) = exp( 2*Sum_{n>=1} 2^[A007814(n)^2] * x^n/n ), where A007814(n) = exponent of highest power of 2 dividing n.at n=20A162580
• Łukasiewicz words (without the last zero) for rooted plane trees where non-leaf branching can occur only at the leftmost branch of any level, but nowhere else.at n=35A209644
• Number of 2 X 2 matrices having all terms in {1,...,n} and determinant = 0 (mod 3).at n=29A210698
• Number of 2 X 2 matrices having all elements in {0,1,...,n} and determinant = 0 (mod 3).at n=29A211033
• Triangle read by rows: T(m,n) is the Szeged index of the grid graph P_m X P_n (1 <= n <= m).at n=54A245826
• Szeged index of the grid graph P_n X P_n.at n=9A245828
• Positive numbers k such that the decimal expansions of k and 1/k have the same nonzero digits.at n=35A376089