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A121188 as a simple table

na(n)
11
21
31
43
56
618
744
8129
9354
101040
112961
128662
1325022
1473005
15211723
16616522
171789320
185203258
1915097067

[1,1,1,3,6,18,44,129,354,1040,2961,8662,25022,
 73005,211723,616522,1789320,5203258,15097067]