5040682279domain: NAppears in sequences1/3 the number of (n+1) X 3 0..2 arrays with every 2 X 2 subblock having at least two equal elements connected horizontally or vertically.at n=6A1843691/3 the number of (n+1)X8 0..2 arrays with every 2X2 subblock having at least two equal elements connected horizontally or vertically.at n=1A184374