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A374709 as a simple table

na(n)
00
11
220
3132
4512
51485
63564
77504
814336
925425
1042500
1167716
12103680
13153517
14220892
15310080
16425984
17574209
18761076
19993700
201280000
211628781
222049740
232553552
243151872
253857425
264684004
275646564
286761216
298045325
309517500
3111197696
3213107200
3315268737
3417706452

[0,1,20,132,512,1485,3564,7504,14336,25425,42500,
 67716,103680,153517,220892,310080,425984,574209,
 761076,993700,1280000,1628781,2049740,2553552,
 3151872,3857425,4684004,5646564,6761216,8045325,
 9517500,11197696,13107200,15268737,17706452]