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A331617 as a simple table

na(n)
01
11
23
311
449
5265
61683
712035
895169
9832337
107998467
1183033403
12922112305
1310978263257
14139956480467
151889161216179
1626798589518593
17401123509624737
186346168059440515
19105040097140558699
201805102151607613361
2132421358229074354601

[1,1,3,11,49,265,1683,12035,95169,832337,7998467,
 83033403,922112305,10978263257,139956480467,
 1889161216179,26798589518593,401123509624737,
 6346168059440515,105040097140558699,
 1805102151607613361,32421358229074354601]