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A287128 as a simple table

na(n)
02
13
26
313
429
565
6145
7323
8719
91599
103555
117903
1217567
1339047
1486791
15192911
16428783
17953055
182118351
194708447
2010465439
2123261471
2251703135
23114920255
24255432575
25567748479
261261931199
272804887039
286234405887
2913857177215
3030800266111
3168459569919

[2,3,6,13,29,65,145,323,719,1599,3555,7903,17567,
 39047,86791,192911,428783,953055,2118351,4708447,
 10465439,23261471,51703135,114920255,255432575,
 567748479,1261931199,2804887039,6234405887,
 13857177215,30800266111,68459569919]