|
|
A086613
|
|
Row sums of triangle A086612.
|
|
1
|
|
|
1, 2, 3, 8, 27, 95, 346, 1298, 4982, 19481, 77344, 310981, 1263768, 5182584, 21420400, 89139754, 373179358, 1570606386, 6641563144, 28204255713, 120231876230, 514315720218, 2207041605690, 9498267611429, 40985335385212
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
FORMULA
|
G.f.: A(x) = (1+x) - x^2*(1+x)^2 + x*A(x)^2.
|
|
EXAMPLE
|
a(3)=-2-1+6+5=8, a(4)=-1-6+0+20+14=27, a(5)=0-5-22+10+70+42=95.
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|