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A369481 as a simple table

na(n)
01
12
25
315
451
5187
6718
72844
811530
947612
10199576
11847013
123632468
1315717041
1468527255
15300780438
161327939406
175893299392
1826275243626
19117635107818
20528631769323
212383660351991
2210781500113896
2348903885040638
24222400899237943
251013841791472632

[1,2,5,15,51,187,718,2844,11530,47612,199576,
 847013,3632468,15717041,68527255,300780438,
 1327939406,5893299392,26275243626,117635107818,
 528631769323,2383660351991,10781500113896,
 48903885040638,222400899237943,1013841791472632]