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A304928 as a simple table

na(n)
18
253
354
4173
5452
61034
72265
85306
912135
1028127
1166067
12153211
13354736
14824768
151914999
164443576
1710323903
1823978120
1955672201
20129295766
21300273962
22697273340
231619276716
243760493158
258732808930
2620280042854
2747096264941

[8,53,54,173,452,1034,2265,5306,12135,28127,66067,
 153211,354736,824768,1914999,4443576,10323903,
 23978120,55672201,129295766,300273962,697273340,
 1619276716,3760493158,8732808930,20280042854,
 47096264941]