43007

Appears in sequences

• a(n) = 42*n^2 - 1.at n=31A158626
• a(n) = 21*2^n - 1.at n=11A171389
• Number of 2 X 2 matrices having all terms in {1,...,n} and determinant >n.at n=17A211060
• Number of length-n 0..2 arrays with no following elements greater than or equal to the first repeated value.at n=12A267226
• Decimal representation of the middle column of the "Rule 169" elementary cellular automaton starting with a single ON (black) cell.at n=15A267589