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A301786 as a simple table

na(n)
15
29
317
432
561
6116
7221
8421
9802
101528
112911
125546
1310566
1420130
1538351
1673065
17139201
18265201
19505252
20962589
211833892
223493869
236656401
2412681550
2524160460
2646029691
2787694210
28167072042
29318300002
30606414395
311155320189
322201076937

[5,9,17,32,61,116,221,421,802,1528,2911,5546,
 10566,20130,38351,73065,139201,265201,505252,
 962589,1833892,3493869,6656401,12681550,24160460,
 46029691,87694210,167072042,318300002,606414395,
 1155320189,2201076937]