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A006976 as a simple table

na(n)
01
113
298
3560
42688
511424
644352
7160512
8549120
91793792
105637632
1117145856
1250692096
13146227200
14412778496
151143078912
163111714816
178341487616
1822052208640
1957567870976
20148562247680
21379364311040
22959384125440

[1,13,98,560,2688,11424,44352,160512,549120,
 1793792,5637632,17145856,50692096,146227200,
 412778496,1143078912,3111714816,8341487616,
 22052208640,57567870976,148562247680,379364311040,
 959384125440]