|
| |
|
|
A027608
|
|
Expansion of 1/((1-x)*(1-2x)^4).
|
|
5
| |
|
|
1, 9, 49, 209, 769, 2561, 7937, 23297, 65537, 178177, 471041, 1216513, 3080193, 7667713, 18808833, 45547521, 109051905, 258473985, 607125505, 1414529025, 3271557121, 7516192769, 17163091969
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (9,-32,56,-48,16)
|
|
|
FORMULA
| a(n-1) = 1 + (n-1)*2^(n+1) + ((n^3 - 7*n + 6)*2^(n-1))/3. - Roger Voles, Dec 07 2004, index corrected by R. J. Mathar, Mar 14 2011
a(n) = A119258(n+4,n). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 11 2006
|
|
|
CROSSREFS
| Sequence in context: A020245 A082608 A058031 * A003297 A012248 A080026
Adjacent sequences: A027605 A027606 A027607 * A027609 A027610 A027611
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
| |
|
|
