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A000496 as a simple table

na(n)
01
11
22
36
424
544
680
7144
8260
9476
10872
111600
122940
135404
149936
1518272
1633604
1761804
18113672
19209072
20384540
21707276
221300880
232392688
244400836
258094396
2614887912
2727383136
2850365436
2992636476
30170385040
31313386944
32576408452
331060180428
341949975816
353586564688

[1,1,2,6,24,44,80,144,260,476,872,1600,2940,5404,
 9936,18272,33604,61804,113672,209072,384540,
 707276,1300880,2392688,4400836,8094396,14887912,
 27383136,50365436,92636476,170385040,313386944,
 576408452,1060180428,1949975816,3586564688]