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A026768 as a simple table

na(n)
01
11
22
33
46
59
616
729
846
982
10145
11237
12421
13737
141228
152171
163788
176388
1811253
1919617
2033344
2158597
22102141
23174571
24306294
25533976
26916309
271605975
282800260
294820020
308441365
3114721208
3225399974
3344458045
3477542951

[1,1,2,3,6,9,16,29,46,82,145,237,421,737,1228,
 2171,3788,6388,11253,19617,33344,58597,102141,
 174571,306294,533976,916309,1605975,2800260,
 4820020,8441365,14721208,25399974,44458045,
 77542951]