[1,1,3,7,20,54,164,500,1630,5472,19257,70132, 265845,1042187,4233556,17747898,76808746, 342105748,1567582938,7371055703,35543320641, 175391546006,884988267329,4558168670317, 23945579145172,128119583103268,697657759802893, 3861749505389798]