Half the number of nX4 binary arrays with each element equal to at least one neighbor.

A180764

Half the number of nX4 binary arrays with each element equal to at least one neighbor.

Terms

    a(0) =2a(1) =34a(2) =390a(3) =4475a(4) =52186a(5) =606546a(6) =7053923a(7) =82032712a(8) =953982820a(9) =11094190209a(10) =129018028226

External references