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A210541 as a simple table

na(n)
11
21
31
41
52
64
78
816
933
1073
11177
12467
131309
143813
1511409
1634999
17110510
18361194
191226930
204334048
2115877297
2260049447
23233426007
24929616461
253786970033
2615777120457
2767260334185
28293617319221
291312868943154
306010792180952

[1,1,1,1,2,4,8,16,33,73,177,467,1309,3813,11409,
 34999,110510,361194,1226930,4334048,15877297,
 60049447,233426007,929616461,3786970033,
 15777120457,67260334185,293617319221,
 1312868943154,6010792180952]