A252045 - OEIS

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A252045 as a simple table

n	a(n)
1	1552
2	2454
3	2674
4	6562
5	53346
6	233342
7	658902
8	16790430
9	127185206
10	456725582
11	51136630446
12	621643287922
13	2444602604514
14	1337470437403802
15	25734548246817278
16	104979871659360990
17	256731178514562552110

[1552,2454,2674,6562,53346,233342,658902,16790430, 127185206,456725582,51136630446,621643287922, 2444602604514,1337470437403802,25734548246817278, 104979871659360990,256731178514562552110]