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A151273 as a simple table

na(n)
01
11
24
311
442
5130
6506
71701
86678
923348
1092162
11330718
121310042
134785834
1419002354
1570329169
16279708134
171045513784
184163154786
1915682361864
2062502107274
21236910288210
22944854095762
233599694071586
2414364065086506
2554956626517442
26219388412771714
27842388119494786
283363960168087706

[1,1,4,11,42,130,506,1701,6678,23348,92162,330718,
 1310042,4785834,19002354,70329169,279708134,
 1045513784,4163154786,15682361864,62502107274,
 236910288210,944854095762,3599694071586,
 14364065086506,54956626517442,219388412771714,
 842388119494786,3363960168087706]