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A000710 as a simple table

na(n)
01
12
25
310
420
535
662
7102
8167
9262
10407
11614
12919
131345
141952
152788
163950
175524
187671
1910540
2014388
2119470
2226190
2334968
2446439
2561275
2680455
27105047
28136541
29176593
30227460
31291673
32372605
33474085
34601105
35759380
36956249
371200143
381501749
391873407

[1,2,5,10,20,35,62,102,167,262,407,614,919,1345,
 1952,2788,3950,5524,7671,10540,14388,19470,26190,
 34968,46439,61275,80455,105047,136541,176593,
 227460,291673,372605,474085,601105,759380,956249,
 1200143,1501749,1873407]