A234723 - OEIS

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A234723 as a simple table

n	a(n)
1	4192
2	12464
3	33560
4	116168
5	360760
6	1349336
7	4577624
8	17961560
9	64580152
10	261840344
11	980480600
12	4070568728
13	15709810360
14	66384051416
15	262296459224
16	1123428836120
17	4523517191992
18	19577976359384
19	80058579242840

[4192,12464,33560,116168,360760,1349336,4577624, 17961560,64580152,261840344,980480600,4070568728, 15709810360,66384051416,262296459224, 1123428836120,4523517191992,19577976359384, 80058579242840]