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A054157 as a simple table

na(n)
00
11
21
33
45
510
617
733
858
9109
10202
11379
12720
131369
142618
155031
169701
1718766
1836387
1970688
20137572
21268208
22523581
231023425
242002829
253923400
267692930
2715096706
2829649082
2958270386
30114596178
31225503077
32443996993
33874648723
341723849033

[0,1,1,3,5,10,17,33,58,109,202,379,720,1369,2618,
 5031,9701,18766,36387,70688,137572,268208,523581,
 1023425,2002829,3923400,7692930,15096706,29649082,
 58270386,114596178,225503077,443996993,874648723,
 1723849033]