8534022

Appears in sequences

• Number of n-element subsets that can be chosen from {1,2,...,2*n} having element sum n^2.at n=16A202261
• Number of n X 2 0..1 arrays with no element equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=14A281074