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A072898 as a simple table

na(n)
01
11
22
32
45
513
638
758
8191
9655
102374
114462
1217519
1371063
14298810
15646846
162887921
1713237457
1862332114
19150303170
20742458253
213748521653
2219340144966
2350903810666
24273315477775
251495006933759
268327893878134
2723599037077934

[1,1,2,2,5,13,38,58,191,655,2374,4462,17519,71063,
 298810,646846,2887921,13237457,62332114,150303170,
 742458253,3748521653,19340144966,50903810666,
 273315477775,1495006933759,8327893878134,
 23599037077934]