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A277387 as a simple table

na(n)
11
217
3138
4670
52355
66671
716212
835148
969765
10129085
11225566
12375882
13601783
14931035
151398440
162046936
172928777
184106793
195655730
207663670
2110233531
2213484647
2317554428
2422600100
2528800525
2636358101
2745500742
2856483938
2969592895
3085144755
31103490896
32125019312
33150157073
34179372865
35213179610

[1,17,138,670,2355,6671,16212,35148,69765,129085,
 225566,375882,601783,931035,1398440,2046936,
 2928777,4106793,5655730,7663670,10233531,13484647,
 17554428,22600100,28800525,36358101,45500742,
 56483938,69592895,85144755,103490896,125019312,
 150157073,179372865,213179610]