A174492 - OEIS

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A174492 as a simple table

n	a(n)
1	18
2	70
3	540
4	800
5	1486
6	2984
7	500
8	6760
9	776
10	4060
11	5604
12	4030
13	5744
14	1710
15	1744
16	46146
17	186174
18	162886
19	62064
20	32150
21	37416
22	16610
23	26884
24	15006
25	130026
26	58724

[18,70,540,800,1486,2984,500,6760,776,4060,5604, 4030,5744,1710,1744,46146,186174,162886,62064, 32150,37416,16610,26884,15006,130026,58724]