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A376977 as a simple table

na(n)
10
20
30
41
51
65
75
821
926
1093
11116
12392
13497
141616
152087
166690
178656
1827493
1935797
20113728
21147838
22469824
23611551
241951237

[0,0,0,1,1,5,5,21,26,93,116,392,497,1616,2087,
 6690,8656,27493,35797,113728,147838,469824,611551,
 1951237]