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A222410 as a simple table

na(n)
01
115
2113
3575
42171
56581
616955
738613
879885
9153091
10275661
11471395
12771863
131217945
141861511
152767241
164014585
175699863
187938505
1910867431
2014647571
2119466525
2225541363
2333121565
2442492101
2553976651

[1,15,113,575,2171,6581,16955,38613,79885,153091,
 275661,471395,771863,1217945,1861511,2767241,
 4014585,5699863,7938505,10867431,14647571,
 19466525,25541363,33121565,42492101,53976651]