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A340963 as a simple table

na(n)
141
157
1621
1742
1877
19133
20210
21316
22434
23574
24770
25980
261239
271547
281876
292331
302828
313367
324032
334746
345565
356574
367602
378757
3810136
3911480
4013132
4114882
4216646
4318662
4420951
4523268
4626082
4728861
4831787
4935218
5038745
5142532
5246403
5350883
5454810
5560613
5665016
5771302
5876069

[1,7,21,42,77,133,210,316,434,574,770,980,1239,
 1547,1876,2331,2828,3367,4032,4746,5565,6574,7602,
 8757,10136,11480,13132,14882,16646,18662,20951,
 23268,26082,28861,31787,35218,38745,42532,46403,
 50883,54810,60613,65016,71302,76069]