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A051286 as a simple table

na(n)
01
11
22
35
411
526
663
7153
8376
9931
102317
115794
1214545
1336631
1492512
15234205
16594169
171510192
183844787
199802895
2025027296
2163972861
22163701327
23419316330
241075049011
252758543201
267083830648
2718204064403
2846812088751
29120452857976

[1,1,2,5,11,26,63,153,376,931,2317,5794,14545,
 36631,92512,234205,594169,1510192,3844787,9802895,
 25027296,63972861,163701327,419316330,1075049011,
 2758543201,7083830648,18204064403,46812088751,
 120452857976]