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A011825 as a simple table

na(n)
12
211
31024
4678570
5496090330
6208865852153
747292630585258
86177590123863188
9507167545168644168
1028199043639169683222
111128291787675746659550
1234105149235238728913664

[2,11,1024,678570,496090330,208865852153,
 47292630585258,6177590123863188,
 507167545168644168,28199043639169683222,
 1128291787675746659550,34105149235238728913664]