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A212587 as a simple table

na(n)
01
14
212
330
466
5148
6316
7682
81438
93052
106428
1113574
1228594
1360284
14127004
15267634
16563870
171188084
182503180
195274062
2011112002
2123412164
2249327516
23103929178
24218970366
25461352988
26972033500
272047996278
284314962930
299091278956
3019154591420
3140357179234

[1,4,12,30,66,148,316,682,1438,3052,6428,13574,
 28594,60284,127004,267634,563870,1188084,2503180,
 5274062,11112002,23412164,49327516,103929178,
 218970366,461352988,972033500,2047996278,
 4314962930,9091278956,19154591420,40357179234]