232477

Appears in sequences

• Numbers n such that n = concatenate(a, b) and sigma(a) + sigma(b) = sigma(n) - n.at n=11A239562
• Number of nX4 0..1 arrays with every element unequal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.at n=16A304145