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A279865 as a simple table

na(n)
10
21
30
46
56
630
754
8158
9342
10846
111910
124446
1310038
1422734
1550838
16113310
17250774
18552654
191211958
202647390
215760630
2212492366
2327003990
2458202526
25125104086
26268228430
27573739254
281224529758
292608132022
305544352206
3111764763670

[0,1,0,6,6,30,54,158,342,846,1910,4446,10038,
 22734,50838,113310,250774,552654,1211958,2647390,
 5760630,12492366,27003990,58202526,125104086,
 268228430,573739254,1224529758,2608132022,
 5544352206,11764763670]