A077237 - OEIS

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A077237 as a simple table

n	a(n)
0	1
1	2
2	6
3	9
4	23
5	34
6	86
7	127
8	321
9	474
10	1198
11	1769
12	4471
13	6602
14	16686
15	24639
16	62273
17	91954
18	232406
19	343177
20	867351
21	1280754
22	3236998
23	4779839
24	12080641
25	17838602
26	45085566
27	66574569
28	168261623

[1,2,6,9,23,34,86,127,321,474,1198,1769,4471,6602, 16686,24639,62273,91954,232406,343177,867351, 1280754,3236998,4779839,12080641,17838602, 45085566,66574569,168261623]