85677domain: NAppears in sequencesNumber of n X 3 binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it.at n=9A183315Integers m such that sigma(m) + sigma(m+1) + sigma(m+2) - sigma(m+3) <= 0, where sigma is the sum of divisors.at n=17A348698