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A031431 as a simple table

na(n)
151
2200
3447
4792
51235
61776
72415
82824
93152
103736
113987
124920
135951
146584
157080
168307
178490
189632
199829
2011055
2111266
2211912
2312576
2414195
2515411
2615912
2717727
2818808
2919640
3021651
3122243
3223760
3325967
3427272
3527936
3628272
3730675

[51,200,447,792,1235,1776,2415,2824,3152,3736,
 3987,4920,5951,6584,7080,8307,8490,9632,9829,
 11055,11266,11912,12576,14195,15411,15912,17727,
 18808,19640,21651,22243,23760,25967,27272,27936,
 28272,30675]