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A368773 as a simple table

na(n)
01
11
23
37
421
553
6159
7419
81257
93401
1010203
1128095
1284285
13235005
14705015
151984155
165952465
1716873745
1850621235
19144327287
20432981861
211240296773
223720890319
2310700364691
2432101094073
2592619680089
26277859040267
27803956981807
282411870945421
296995553520653
3020986660561959
3161001041404555

[1,1,3,7,21,53,159,419,1257,3401,10203,28095,
 84285,235005,705015,1984155,5952465,16873745,
 50621235,144327287,432981861,1240296773,
 3720890319,10700364691,32101094073,92619680089,
 277859040267,803956981807,2411870945421,
 6995553520653,20986660561959,61001041404555]