A323450 - OEIS

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A323450 as a simple table

n	a(n)
0	1
1	1
2	3
3	6
4	14
5	26
6	56
7	103
8	203
9	374
10	702
11	1262
12	2306
13	4078
14	7242
15	12628
16	21988
17	37756
18	64682
19	109606
20	185082
21	309958
22	516932
23	856221
24	1412461
25	2316416
26	3783552

[1,1,3,6,14,26,56,103,203,374,702,1262,2306,4078, 7242,12628,21988,37756,64682,109606,185082,309958, 516932,856221,1412461,2316416,3783552]