A126480 - OEIS

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A126480 as a simple table

n	a(n)
0	1
1	12
2	72
3	448
4	2816
5	17780
6	112440
7	711504
8	4503320
9	28505304
10	180439880
11	1142206528
12	7230339936
13	45769222384
14	289726772704
15	1834018988272
16	11609648360160
17	73491027329888
18	465210573030272
19	2944861245639136

[1,12,72,448,2816,17780,112440,711504,4503320, 28505304,180439880,1142206528,7230339936, 45769222384,289726772704,1834018988272, 11609648360160,73491027329888,465210573030272, 2944861245639136]