|
| |
|
|
A016250
|
|
Expansion of 1/((1-x)(1-7x)(1-9x)).
|
|
0
| |
|
|
1, 17, 210, 2290, 23411, 230307, 2210020, 20850980, 194384421, 1796538997, 16498405430, 150792530070, 1373280939031, 12472565630087, 113044350922440, 1022937980063560, 9245213572903241, 83478324422447577
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
FORMULA
| a(0)=1, a(1)=17, a(n)=16*a(n-1)-63*a(n-2)+1. - Vincenzo Librandi, Feb 10 2011
|
|
|
MAPLE
| a:=n->sum((9^(n-j)-7^(n-j))/2, j=0..n): seq(a(n), n=1..18); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 15 2007
|
|
|
CROSSREFS
| Sequence in context: A014921 A081035 A016299 * A070137 A021054 A016246
Adjacent sequences: A016247 A016248 A016249 * A016251 A016252 A016253
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
| |
|
|
