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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A144893 Second column (m=2) of triangle A144891 (S1hat(5)). 2
1, 5, 55, 360, 3630, 29820, 321300, 3225600, 38808000, 466300800, 6360379200, 89703936000, 1389213504000, 22565765376000, 394272204480000, 7248941973504000, 141496402037760000, 2901258659819520000, 62617333274496000000, 1414755114367795200000, 33446554797269053440000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

FORMULA

a(n)= A144891(n+2,2), n>=0.

CROSSREFS

A001720 (first column), A144894 (third column).

Sequence in context: A103326 A060558 A014852 * A015266 A138163 A306095

Adjacent sequences:  A144890 A144891 A144892 * A144894 A144895 A144896

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang Oct 09 2008

STATUS

approved

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 May 24 06:53 EDT 2019. Contains 323529 sequences. (Running on oeis4.)