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A027167 as a simple table

na(n)
01
12
24
37
415
524
650
781
8165
9266
10544
11875
121787
132876
145870
159445
1619281
1731022
1863324
19101887
20207975
21334624
22683050
231099001
242243325
253609426
267367704
2711854355
2824197587
2938932996
3079471590
31127866765
32261006761

[1,2,4,7,15,24,50,81,165,266,544,875,1787,2876,
 5870,9445,19281,31022,63324,101887,207975,334624,
 683050,1099001,2243325,3609426,7367704,11854355,
 24197587,38932996,79471590,127866765,261006761]