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A027600 as a simple table

na(n)
13
26
315
434
586
6216
7548
81411
93677
109620
1125295
1266735
13176535
14467996
151242482
163302288
178784052
1823380492
1962260290
20165852146
21441922281
221177759338
233139292092
248368647137
2522310795823
2659484268376

[3,6,15,34,86,216,548,1411,3677,9620,25295,66735,
 176535,467996,1242482,3302288,8784052,23380492,
 62260290,165852146,441922281,1177759338,
 3139292092,8368647137,22310795823,59484268376]