123780domain: NAppears in sequencesG.f.: exp( Sum_{n>=1} A051064(n)*3^A051064(n)*x^n/n ) where A051064(n) equals the 3-adic valuation of 3n.at n=27A183038Number of (n+2) X 4 binary arrays avoiding patterns 000 and 011 in rows, columns and nw-to-se diagonals.at n=9A202771