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A031756 as a simple table

na(n)
11522
26086
313692
424340
538030
654762
774536
897352
9123210
10152110
11184052
12219036
13257062
14298130
15342240
16389392
17439586
18492822
19549100
20608420
21670782
22736186
23804632
24876120
25950650
261028222
271108836
281192492
291279190
301368930

[1522,6086,13692,24340,38030,54762,74536,97352,
 123210,152110,184052,219036,257062,298130,342240,
 389392,439586,492822,549100,608420,670782,736186,
 804632,876120,950650,1028222,1108836,1192492,
 1279190,1368930]