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A277974 as a simple table

na(n)
00
11
24
313
438
5101
6252
7594
81340
92907
106104
1112447
1224744
1348068
1491476
15170838
16313646
17566824
181009628
191774290
203079338
215282172
228962288
2315050848
2425032420
2541255101
2667406472
27109236685
28175654072
29280371510
30444372452
31699579062
321094289564

[0,1,4,13,38,101,252,594,1340,2907,6104,12447,
 24744,48068,91476,170838,313646,566824,1009628,
 1774290,3079338,5282172,8962288,15050848,25032420,
 41255101,67406472,109236685,175654072,280371510,
 444372452,699579062,1094289564]