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A140787 as a simple table

na(n)
01
11
27
39
439
557
6199
7313
8967
91593
104551
117737
1220935
1336409
1494663
15167481
16422343
17757305
181864135
193378745
208155591
2114913081
2235418567
2365244729
24152859079
25283348537
26656175559
271222872633
282803659207
295249404473

[1,1,7,9,39,57,199,313,967,1593,4551,7737,20935,
 36409,94663,167481,422343,757305,1864135,3378745,
 8155591,14913081,35418567,65244729,152859079,
 283348537,656175559,1222872633,2803659207,
 5249404473]