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A279116 as a simple table

na(n)
10
20
30
40
539
66472
7311552
85576682
956289710
10389130774
112059061646
128924241327
1333134160010
14108698226956
15322211640480

[0,0,0,0,39,6472,311552,5576682,56289710,
 389130774,2059061646,8924241327,33134160010,
 108698226956,322211640480]