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A006534 as a simple table

na(n)
11
21
31
44
56
619
743
8120
9307
10866
112336
126588
1318373
1452119
15147700
16422016
171207477
183471067
199999135
2028893560
2183665729
22242826187
23706074369
242056870697
256001555275
2617538335077
2751323792789
28150390053432
29441210664337
301295886453860
313810208448847
3211214076720061
3333035788241735

[1,1,1,4,6,19,43,120,307,866,2336,6588,18373,
 52119,147700,422016,1207477,3471067,9999135,
 28893560,83665729,242826187,706074369,2056870697,
 6001555275,17538335077,51323792789,150390053432,
 441210664337,1295886453860,3810208448847,
 11214076720061,33035788241735]