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A278336 as a simple table

na(n)
10
21
34
45
59
616
720
841
943
1063
11127
12159
13413
141591
151812
162031
172315
182437
194177
204860
215771
227060
237389
249925
2534103
26115879

[0,1,4,5,9,16,20,41,43,63,127,159,413,1591,1812,
 2031,2315,2437,4177,4860,5771,7060,7389,9925,
 34103,115879]