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A027814 as a simple table

n a(n)
4 126
5 1512
6 9702
7 44352
8 162162
9 504504
10 1387386
11 3459456
12 7963956
13 17153136
14 34918884
15 67721472
16 125919612
17 225629712
18 391270572
19 658982016
20 1081142370
21 1732250520
22 2716483770
23 4177293120
24 6309453150
25 9374044680
26 13716915030
27 19791233280
28 28184836680

[126,1512,9702,44352,162162,504504,1387386,
 3459456,7963956,17153136,34918884,67721472,
 125919612,225629712,391270572,658982016,
 1081142370,1732250520,2716483770,4177293120,
 6309453150,9374044680,13716915030,19791233280,
 28184836680]

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Last modified September 1 04:07 EDT 2014. Contains 246282 sequences.