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A249360 as a simple table

na(n)
12
2395
32048
49413
530848
684259
7198570
8421913
9823336
101504241
112601366
124297747
136831608
1410505741
1515697544
1622873679
1732598374
1845551245
1962537376
2084505589
21112561702
22147987947
23192258132
24247057213
25314300264
26396153407

[2,395,2048,9413,30848,84259,198570,421913,823336,
 1504241,2601366,4297747,6831608,10505741,15697544,
 22873679,32598374,45551245,62537376,84505589,
 112561702,147987947,192258132,247057213,314300264,
 396153407]