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A121674 as a simple table

na(n)
01
11
25
328
4233
52376
628102
7379016
85707025
994439440
101699067321
1132951077193
12684009742319
1315110032165151
14353485501643471
158721374385748256
16226128389777924385
176142306518887606112
18174311816444805024379

[1,1,5,28,233,2376,28102,379016,5707025,94439440,
 1699067321,32951077193,684009742319,
 15110032165151,353485501643471,8721374385748256,
 226128389777924385,6142306518887606112,
 174311816444805024379]