Number of domicule tilings of a 4 X n grid.

Terms

a(0) =1a(1) =1a(2) =11a(3) =43a(4) =280a(5) =1563a(6) =9415a(7) =55553a(8) =331133a(9) =1968400a(10) =11716601a(11) =69716257a(12) =414898579a(13) =2469046811a(14) =14693544104a(15) =87442204835a(16) =520375602855