A099732 - OEIS

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A099732 as a simple table

n	a(n)
1	1
2	2
3	6
4	24
5	24
6	72
7	144
8	1152
9	1296
10	2304
11	6912
12	82944
13	82944
14	165888
15	497664
16	7962624
17	15925248
18	47775744
19	191102976
20	191102976
21	573308928
22	1146617856
23	13759414272
24	13759414272
25	27518828544
26	82556485632

[1,2,6,24,24,72,144,1152,1296,2304,6912,82944, 82944,165888,497664,7962624,15925248,47775744, 191102976,191102976,573308928,1146617856, 13759414272,13759414272,27518828544,82556485632]