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A264879 as a simple table

na(n)
11
20
31
41
57
620
749
8175
9323
101085
112290
126489
1315751
1441749
15105514
16276079
17706396
181825615
194714184
2012103729
2131297188
2280431077
23207561706
24534335127
251377615603
263548250067
279145959294
2823561913471
2960719538527
30156456169973

[1,0,1,1,7,20,49,175,323,1085,2290,6489,15751,
 41749,105514,276079,706396,1825615,4714184,
 12103729,31297188,80431077,207561706,534335127,
 1377615603,3548250067,9145959294,23561913471,
 60719538527,156456169973]