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A155284 as a simple table

na(n)
41
513
637
773
8309
92413
1028031
11212649
122010251
1329604759
14633868196
1515160513746
16396011442436
1713223926465865
18597617100526032

[1,13,37,73,309,2413,28031,212649,2010251,
 29604759,633868196,15160513746,396011442436,
 13223926465865,597617100526032]