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A374635 as a simple table

na(n)
01
11
22
33
46
510
620
736
869
9130
10247
11467
12890
131689
143213
156110
1611627
1722121
1842101
1980124
20152512
21290300
22552609
231051953
242002583
253812326

[1,1,2,3,6,10,20,36,69,130,247,467,890,1689,3213,
 6110,11627,22121,42101,80124,152512,290300,552609,
 1051953,2002583,3812326]