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A281661 as a simple table

na(n)
01
12
245
3140
41105
51638
68029
78600
833345
929930
10101101
1181252
12250705
13186830
14540765
15381488
161052929
17712530
181895725
191241660
203208401
212046902
225164765
233224520
247977025
254890938
2611899629
277184660
2817233105
2910268190
3024327901
3114329952
3233588225
3319586210

[1,2,45,140,1105,1638,8029,8600,33345,29930,
 101101,81252,250705,186830,540765,381488,1052929,
 712530,1895725,1241660,3208401,2046902,5164765,
 3224520,7977025,4890938,11899629,7184660,17233105,
 10268190,24327901,14329952,33588225,19586210]