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A141351 as a simple table

na(n)
01
12
23
36
415
543
6133
7430
81431
94863
1016797
1158787
12208013
13742901
142674441
159694846
1635357671
17129644791
18477638701
191767263191
206564120421
2124466267021
2291482563641
23343059613651
241289904147325
254861946401453
2618367353072153
2769533550916005

[1,2,3,6,15,43,133,430,1431,4863,16797,58787,
 208013,742901,2674441,9694846,35357671,129644791,
 477638701,1767263191,6564120421,24466267021,
 91482563641,343059613651,1289904147325,
 4861946401453,18367353072153,69533550916005]