login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

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]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified December 21 07:50 EST 2014. Contains 252297 sequences.