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A254640 as a simple table

na(n)
11
267
3927
46677
532942
6126378
7404634
81129854
92833479
106515509
1113947505
1228115451
1353846156
1498669156
15173975076
16296541132
17490504893
18789878583
191241708083
201909993393
212880500634
224266609710
236216356510
248920844010
2512624212835
2617635378761

[1,67,927,6677,32942,126378,404634,1129854,
 2833479,6515509,13947505,28115451,53846156,
 98669156,173975076,296541132,490504893,789878583,
 1241708083,1909993393,2880500634,4266609710,
 6216356510,8920844010,12624212835,17635378761]