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A006747 as a simple table

na(n)
10
20
30
41
51
65
74
818
919
1073
1173
12278
13283
141076
151090
164125
174183
1815939
1916105
2061628
2162170
22239388
23240907
24932230
25936447
263641945
273651618
2814262540
2914277519
3055987858
3155961118
32220223982
33219813564
34867835023
35865091976
363425442681

[0,0,0,1,1,5,4,18,19,73,73,278,283,1076,1090,4125,
 4183,15939,16105,61628,62170,239388,240907,932230,
 936447,3641945,3651618,14262540,14277519,55987858,
 55961118,220223982,219813564,867835023,865091976,
 3425442681]