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A076951 as a simple table

na(n)
11
21
33
40
5205
60
739991
80
957
105905
119090909091
120
138230246567621
140
1510371206370520815
160
1717361641481138401521
180
1937275544492386193492507
200
2122706531343006
220
23326583187044036098379401213863
240
2545035996273705

[1,1,3,0,205,0,39991,0,57,5905,9090909091,0,
 8230246567621,0,10371206370520815,0,
 17361641481138401521,0,37275544492386193492507,0,
 22706531343006,0,326583187044036098379401213863,0,
 45035996273705]