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A013618 as a simple table

na(n)
01
11
211
31
422
5121
61
733
8363
91331
101
1144
12726
135324
1414641
151
1655
171210
1813310
1973205
20161051
211
2266
231815
2426620
25219615
26966306
271771561
281
2977
302541
3146585
32512435
333382071
3412400927
3519487171
361
3788
383388
3974536
401024870
419018856
4249603708
43155897368
44214358881

[1,1,11,1,22,121,1,33,363,1331,1,44,726,5324,
 14641,1,55,1210,13310,73205,161051,1,66,1815,
 26620,219615,966306,1771561,1,77,2541,46585,
 512435,3382071,12400927,19487171,1,88,3388,74536,
 1024870,9018856,49603708,155897368,214358881]