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A239257 as a simple table

na(n)
11
23
37
416
535
673
7151
8304
9604
101198
112362
124637
139117
1417954
1535350
1669760
17137959
18273213
19542015
201076870
212141996
224265350
238501015
2416954408
2533833943
2667549763
27134912857
28269532456
29538603324
301076479708
312151817116
324301833827
338600826484

[1,3,7,16,35,73,151,304,604,1198,2362,4637,9117,
 17954,35350,69760,137959,273213,542015,1076870,
 2141996,4265350,8501015,16954408,33833943,
 67549763,134912857,269532456,538603324,1076479708,
 2151817116,4301833827,8600826484]