|
Search: id:A101478
|
|
|
| A101478 |
|
G.f. satisfies A(x) = x*(1+A)^4/(1+A^2). |
|
+0
2
|
|
| 0, 1, 4, 21, 124, 782, 5144, 34845, 241196, 1697498, 12104872, 87246770, 634425752, 4647805372, 34267130928, 254035385949, 1892315106252, 14155536314786, 106288436980488, 800753707211430, 6050872882024520
(list; graph; listen)
|
|
|
OFFSET
|
0,3
|
|
|
LINKS
|
M. Bousquet-Melou, Limit laws for embedded trees
|
|
MAPLE
|
A:= proc(n) option remember; if n=0 then 0 else convert (series (x* (1+A(n-1))^4/ (1+A(n-1)^2), x, n+1), polynom) fi end: a:= n-> coeff (A(n), x, n): seq (a(n), n=0..20); [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), Aug 23 2008]
|
|
CROSSREFS
|
Sequence in context: A003014 A108404 A115136 this_sequence A093965 A003168 A032326
Adjacent sequences: A101475 A101476 A101477 this_sequence A101479 A101480 A101481
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ralf Stephan, Jan 21 2005
|
|
|
Search completed in 0.002 seconds
|
