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A036681 as a simple table

na(n)
02
15
214
332
471
5149
6304
7604
81177
92256
104266
117974
1214758
1327079
1449312
1589200
16160393
17286867
18510596
19904838
201597091
212808672
224922820
238601660
2414986730
2526042201
2645141410
2778067712
28134719931
29232014593
30398818552
31684322432

[2,5,14,32,71,149,304,604,1177,2256,4266,7974,
 14758,27079,49312,89200,160393,286867,510596,
 904838,1597091,2808672,4922820,8601660,14986730,
 26042201,45141410,78067712,134719931,232014593,
 398818552,684322432]