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A120718 as a simple table

na(n)
00
13
26
318
445
5120
6312
7819
82142
95610
1014685
1138448
12100656
13263523
14689910
151806210
164728717
1712379944
1832411112
1984853395
20222149070
21581593818
221522632381
233986303328
2410436277600
2527322529475
2671531310822
27187271402994
28490282898157
291283577291480

[0,3,6,18,45,120,312,819,2142,5610,14685,38448,
 100656,263523,689910,1806210,4728717,12379944,
 32411112,84853395,222149070,581593818,1522632381,
 3986303328,10436277600,27322529475,71531310822,
 187271402994,490282898157,1283577291480]