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A156854 as a simple table

na(n)
152
22726
39450
420224
535048
653922
776846
8103820
9134844
10169918
11209042
12252216
13299440
14350714
15406038
16465412
17528836
18596310
19667834
20743408
21823032
22906706
23994430
241086204
251182028
261281902
271385826
281493800
291605824
301721898

[52,2726,9450,20224,35048,53922,76846,103820,
 134844,169918,209042,252216,299440,350714,406038,
 465412,528836,596310,667834,743408,823032,906706,
 994430,1086204,1182028,1281902,1385826,1493800,
 1605824,1721898]