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A258173 as a simple table

na(n)
01
11
23
312
458
5321
61975
713265
896073
9743753
106113769
1153086314
12484861924
134641853003
1446441475253
15484327870652
165252981412262
1759132909030463
18689642443691329
198319172260103292
20103645882500123026
211331832693574410475
2217629142345935969713

[1,1,3,12,58,321,1975,13265,96073,743753,6113769,
 53086314,484861924,4641853003,46441475253,
 484327870652,5252981412262,59132909030463,
 689642443691329,8319172260103292,
 103645882500123026,1331832693574410475,
 17629142345935969713]