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A026772 as a simple table

na(n)
21
310
471
5444
62616
714938
883821
9465654
102572166
1114164320
1277886902
13428113940
142353823912
1512950837432
1671326701751
17393289209772
182171308560036
1912003376308370
2066445540183348
21368304502202306
222044177115127750

[1,10,71,444,2616,14938,83821,465654,2572166,
 14164320,77886902,428113940,2353823912,
 12950837432,71326701751,393289209772,
 2171308560036,12003376308370,66445540183348,
 368304502202306,2044177115127750]