56734

Appears in sequences

• Number of -n..n arrays x(0..3) of 4 elements with zero sum and nonzero first and second differences.at n=21A200456
• Lexicographically first sequence of distinct terms such that any set of five successive digits can be reordered as {d, d+1, d+2, d+3, d+4}, d being the smallest of the five digits.at n=54A302500
• Number of distinct tilings of an n X n square with free n-polyominoes.at n=5A328020
• E.g.f.: -log(1 + LambertW(-x) * (2 + LambertW(-x)) / 2).at n=6A332237
• a(n) is the number of prime quadruples of the form {p, p+2, p+6, p+12} with p < 10^n.at n=9A370158