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A108629 as a simple table

na(n)
11
20
31
42
54
611
728
875
9207
10579
111647
124744
1313807
1440550
15120016
16357613
171071916
183229870
199777767
2029724593
2190705886
22277744244
23853123473
242627968236
258116487286
2625128482223
2777971354506
28242439732171

[1,0,1,2,4,11,28,75,207,579,1647,4744,13807,40550,
 120016,357613,1071916,3229870,9777767,29724593,
 90705886,277744244,853123473,2627968236,
 8116487286,25128482223,77971354506,242439732171]