A217135 - OEIS

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A217135 as a simple table

n	a(n)
1	3
2	4
3	7
4	8
5	14
6	20
7	22
8	62
9	139
10	254
11	272
12	430
13	907
14	1906
15	2278
16	2827
17	3598
18	6812
19	15266
20	20915
21	26180
22	26342
23	27022
24	48275
25	65186
26	69247
27	86647

[3,4,7,8,14,20,22,62,139,254,272,430,907,1906, 2278,2827,3598,6812,15266,20915,26180,26342,27022, 48275,65186,69247,86647]