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A305218 as a simple table

na(n)
10
24
38
415
531
692
7264
8784
92378
107342
1122596
1269617
13214983
14664217
152052307
166342935
1719606074
1860603932
19187335711
20579091828
211790098137
225533594957
2317105617402
2452877461311
25163456660240
26505283076436
271561949355656

[0,4,8,15,31,92,264,784,2378,7342,22596,69617,
 214983,664217,2052307,6342935,19606074,60603932,
 187335711,579091828,1790098137,5533594957,
 17105617402,52877461311,163456660240,505283076436,
 1561949355656]