[1,2,7,22,69,208,634,1903,5734,17210,51702,155107, 465561,1396684,4190689,12572144,37718360, 113155081,339471195,1018413586,3055258062, 9165774828,27497376189,82492128568,247476542954, 742429628932,2227289352360,6681868062822, 20045605585809]