login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

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

A187248 as a simple table

n a(n)
0 1
1 0
2 0
3 0
4 2
5 16
6 104
7 688
8 5116
9 44224
10 438560
11 4851136
12 58603544
13 764606016
14 10715043104
15 160692920256
16 2570016145680
17 43678554864128
18 786135111482112
19 14936420654180864
20 298733557232591136
21 6273502048592506112
22 138018105454095739008
23 3174423293668325353216

[1,0,0,0,2,16,104,688,5116,44224,438560,4851136,
 58603544,764606016,10715043104,160692920256,
 2570016145680,43678554864128,786135111482112,
 14936420654180864,298733557232591136,
 6273502048592506112,138018105454095739008,
 3174423293668325353216]

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 8 20:37 EST 2021. Contains 349596 sequences. (Running on oeis4.)