1, 1, 7, 34, 158, 655, 2578, 9619, 34659, 120966, 412214, 1375861, 4516058, 14611989, 46712942, 147798787, 463512254, 1442513910, 4459548539, 13706894100, 41915906463, 127607366453, 386953440455, 1169295277193, 3522431890950, 10581852932516, 31711045921908