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A268430 as a simple table

na(n)
01
12
25
316
453
5184
6654
72368
88689
932216
10120434
11453248
121715266
136521584
1424894364
1595353472
16366324729
171411015064
185447548682
1921074836864
2081682204614
21317110750672
221232951721604
234800353915264
2418712880651802
2573030245143792
26285311648317172

[1,2,5,16,53,184,654,2368,8689,32216,120434,
 453248,1715266,6521584,24894364,95353472,
 366324729,1411015064,5447548682,21074836864,
 81682204614,317110750672,1232951721604,
 4800353915264,18712880651802,73030245143792,
 285311648317172]