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A223006 as a simple table

n a(n)
1 1
2 4
3 10
4 34
5 101
6 331
7 1044
8 3406
9 11008
10 36039
11 117866
12 387709
13 1276783
14 4217763
15 13954040
16 46258390
17 153562565
18 510523621
19 1699272620
20 5662498639
21 18888082230
22 63062936820
23 210730527620
24 704727803329
25 2358457291626
26 7898146040191

[1,4,10,34,101,331,1044,3406,11008,36039,117866,
 387709,1276783,4217763,13954040,46258390,
 153562565,510523621,1699272620,5662498639,
 18888082230,63062936820,210730527620,704727803329,
 2358457291626,7898146040191]

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Last modified January 20 03:25 EST 2022. Contains 350467 sequences. (Running on oeis4.)