login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

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

A223370 as a simple table

n a(n)
1 21
2 90
3 90
4 420
5 990
6 420
7 1992
8 11610
9 11610
10 1992
11 9552
12 139158
13 357354
14 139158
15 9552
16 45984
17 1686042
18 11206806
19 11206806
20 1686042
21 45984
22 221760
23 20537766
24 356391222
25 933306108
26 356391222
27 20537766
28 221760
29 1070208
30 250834914

[21,90,90,420,990,420,1992,11610,11610,1992,9552,
 139158,357354,139158,9552,45984,1686042,11206806,
 11206806,1686042,45984,221760,20537766,356391222,
 933306108,356391222,20537766,221760,1070208,
 250834914]

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 09:42 EDT 2024. Contains 371935 sequences. (Running on oeis4.)