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A188852 as a simple table

na(n)
17
249
3219
4908
53642
614265
754914
8209116
9790202
102970663
1111127947
1241582147
13155115627
14577944508
152151567661
168005167634
1729772011406
18110693241831
19411477718640
201529360380741
215683684052119
2221121242014609
2378485142931206

[7,49,219,908,3642,14265,54914,209116,790202,
 2970663,11127947,41582147,155115627,577944508,
 2151567661,8005167634,29772011406,110693241831,
 411477718640,1529360380741,5683684052119,
 21121242014609,78485142931206]