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A033813 as a simple table

na(n)
14
215
337
477
5146
6262
7454
8769
91283
102119
113476
125676
139240
1415011
1524353
1639473
1763942
18103538
19167610
20271285
21439039
22710475
231149672
241860312
253010156
264870647
277880989
2812751829
2920633018
3033385054

[4,15,37,77,146,262,454,769,1283,2119,3476,5676,
 9240,15011,24353,39473,63942,103538,167610,271285,
 439039,710475,1149672,1860312,3010156,4870647,
 7880989,12751829,20633018,33385054]