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A300158 as a simple table

na(n)
11
21
34
48
520
638
777
8143
9267
10474
11856
121540
132703
144749
158204
1614233
1724714
1842234
1972495
20122930
21209534
22357733
23603816
241023096
251735667
262915260
274913350
288216036
2913794118
3023198608
3138710749
3264802028
33108623872
34180780234
35301734372
36500717764
37833682438
381390233453
392304627170

[1,1,4,8,20,38,77,143,267,474,856,1540,2703,4749,
 8204,14233,24714,42234,72495,122930,209534,357733,
 603816,1023096,1735667,2915260,4913350,8216036,
 13794118,23198608,38710749,64802028,108623872,
 180780234,301734372,500717764,833682438,
 1390233453,2304627170]