A296325 - OEIS

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A296325 as a simple table

n	a(n)
1	1
2	26
3	122
4	562
5	3569
6	20088
7	112235
8	643541
9	3666933
10	20890748
11	119144071
12	679253594
13	3873420006
14	22088544036
15	125956423940
16	718274061983
17	4096006211974
18	23357654042928
19	133198547653768
20	759573589408188

[1,26,122,562,3569,20088,112235,643541,3666933, 20890748,119144071,679253594,3873420006, 22088544036,125956423940,718274061983, 4096006211974,23357654042928,133198547653768, 759573589408188]