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A099748 as a simple table

na(n)
01
12
221
3225
43328
533518
6257909
71544907
87657779
932454761
10121100938
11405911691
121242567609
133517715389
149305703095
1523194232130
1654848107788
17123760738779
18267768667311
19557808040826
201122804257019
212190539008704
224153269969884
237670791137960

[1,2,21,225,3328,33518,257909,1544907,7657779,
 32454761,121100938,405911691,1242567609,
 3517715389,9305703095,23194232130,54848107788,
 123760738779,267768667311,557808040826,
 1122804257019,2190539008704,4153269969884,
 7670791137960]