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A007229 as a simple table

n a(n)
2 38
3 264
4 2016
5 15504
6 122661
7 986700
8 8064576
9 66756144
10 558689224
11 4719593312
12 40193414112
13 344721646640
14 2974925353455
15 25814778578820
16 225105551191680
17 1971557711151600
18 17336058626562984
19 152984380665537760

[38,264,2016,15504,122661,986700,8064576,66756144,
 558689224,4719593312,40193414112,344721646640,
 2974925353455,25814778578820,225105551191680,
 1971557711151600,17336058626562984,
 152984380665537760]

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Last modified December 22 22:37 EST 2014. Contains 252372 sequences.