3655744domain: NAppears in sequencesa(n) = ((2 + sqrt(2))^n - (2 - sqrt(2))^n)^2/8.at n=7A144844Number of n X 2 0..2 arrays with rows, antidiagonals and columns unimodal.at n=12A223719Largest integer k in base n whose squared digits sum to sqrt(k).at n=25A226353