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A277226 as a simple table

na(n)
21
334
4464
53182
614769
753044
8158976
9416140
10980625
112124310
124295376
138199674
1414907809
1525992232
1643700224
1771167704
18112680801
19173990730
20262690000
21388656070
22564571601
23806527964
241134722304
251574255332
262156041329
272917838014
283905408976
295173826770
306788930625

[1,34,464,3182,14769,53044,158976,416140,980625,
 2124310,4295376,8199674,14907809,25992232,
 43700224,71167704,112680801,173990730,262690000,
 388656070,564571601,806527964,1134722304,
 1574255332,2156041329,2917838014,3905408976,
 5173826770,6788930625]