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A278734 as a simple table

na(n)
10
26
36
440
5152
640
7155
81947
91947
10155
11456
1217352
1358904
1417352
15456
161128
17121520
181410818
191410818
20121520
211128
222472
23712406
2428637916
2599992428
2628637916
27712406
282472
294950
303633649
31506031118
326410559865
336410559865
34506031118

[0,6,6,40,152,40,155,1947,1947,155,456,17352,
 58904,17352,456,1128,121520,1410818,1410818,
 121520,1128,2472,712406,28637916,99992428,
 28637916,712406,2472,4950,3633649,506031118,
 6410559865,6410559865,506031118]