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A034742 as a simple table

na(n)
11
20
31
44
513
640
7131
8424
91428
104848
1116795
1258740
13208011
14742768
152674425
169694416
1735357669
18129643320
19477638699
201767258324
216564120287
2224466250224
2391482563639
24343059554440
251289904147310
264861946193440
2718367353070722
2869533550173100
29263747951750359

[1,0,1,4,13,40,131,424,1428,4848,16795,58740,
 208011,742768,2674425,9694416,35357669,129643320,
 477638699,1767258324,6564120287,24466250224,
 91482563639,343059554440,1289904147310,
 4861946193440,18367353070722,69533550173100,
 263747951750359]