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A167889 as a simple table

na(n)
00
10
21
34
425
5100
6481
71924
88425
933700
10141361
11565444
122320825
139283300
1437664641
15150658564
16607417225
172429668900
189761722321
1939046889284
20156574977625
21626299910500
222508686426401
2310034745705604
2440170363882025

[0,0,1,4,25,100,481,1924,8425,33700,141361,565444,
 2320825,9283300,37664641,150658564,607417225,
 2429668900,9761722321,39046889284,156574977625,
 626299910500,2508686426401,10034745705604,
 40170363882025]