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A006884 as a simple table

na(n)
11
22
33
47
515
627
7255
8447
9639
10703
111819
124255
134591
149663
1520895
1626623
1731911
1860975
1977671
20113383
21138367
22159487
23270271
24665215
25704511
261042431
271212415
281441407
291875711
301988859
312643183
322684647
333041127
343873535
354637979
365656191

[1,2,3,7,15,27,255,447,639,703,1819,4255,4591,
 9663,20895,26623,31911,60975,77671,113383,138367,
 159487,270271,665215,704511,1042431,1212415,
 1441407,1875711,1988859,2643183,2684647,3041127,
 3873535,4637979,5656191]