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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A055863 Fifth column of triangle A055858. 0
0, 0, 0, 0, 320, 4500, 74088, 1404928, 30233088, 729000000, 19487171000, 572305637376, 18324574916544, 635492476982272, 23734930078125000, 949978046398464000, 40569151622782717952, 1841458074930764070912 (list; graph; refs; listen; history; internal format)
OFFSET

0,5

FORMULA

a(i)=0, i=0..3; a(n)= (n^3)*(n+1)^(n-3), n >= 4.

E.g.f.: -x*(3+16*x+54*x^2)/12+(W(-x)^2)*(3-7*W(-x)+2*W(-x)^2)/ (12*(1+W(-x))*x), W(x) principal branch of Lambert's function.

CROSSREFS

a(n)=A055858(n, 4). Cf. A000312, A000169, A055860-A055862.

Sequence in context: A064905 A121010 A110289 * A168636 A045813 A121011

Adjacent sequences:  A055860 A055861 A055862 * A055864 A055865 A055866

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de) Jun 20 2000

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

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

Last modified February 17 09:41 EST 2012. Contains 206009 sequences.