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A072850 as a simple table

na(n)
11
22
36
418
554
6146
7391
81081
93004
108320
1122984
1263424
13175176
14484113
151337721
163695886
1710210702
1828209954
1977940078
20215337554
21594943087
221643728129
234541349672
2412547013504
2534665373744
2695774808224
27264610227072

[1,2,6,18,54,146,391,1081,3004,8320,22984,63424,
 175176,484113,1337721,3695886,10210702,28209954,
 77940078,215337554,594943087,1643728129,
 4541349672,12547013504,34665373744,95774808224,
 264610227072]