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A212198 as a simple table

na(n)
01
11
22
36
424
5116
6632
73720
823072
9148528
10983072
116647776
1245727616
13318947136
142250473344
1516034726016
16115204555264
17833701020416
186071393452544
1944460988694016
20327199429228544
212418586647786496
2217948732704159744
23133679253739800576

[1,1,2,6,24,116,632,3720,23072,148528,983072,
 6647776,45727616,318947136,2250473344,16034726016,
 115204555264,833701020416,6071393452544,
 44460988694016,327199429228544,2418586647786496,
 17948732704159744,133679253739800576]