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A116869 Sixth column of triangle A028364. 1
132, 297, 869, 2739, 8986, 30275, 104006, 362738, 1280592, 4566642, 16423581, 59497075, 216901454, 795117015, 2929034130, 10837075830, 40253156520, 150045410430, 561097823490, 2104382963214, 7913603390196 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
COMMENTS
Also sixth diagonal of triangle A067323.
LINKS
FORMULA
a(n)= A028364(n+5,5) = sum(C(k)*C(n+5-k),k=0..5), with the Catalan numbers C(n):=A000108(n).
G.f.: (c5(x)*c(x)-(c5(x)-1)/x)/x^5, with c5(x) := sum(C(k)*x^k, k=0..5) and c(x) is the g.f. for the Catalan numbers A000108.
CROSSREFS
Cf. A067296 (fifth column).
Sequence in context: A319274 A241754 A063365 * A035141 A205222 A116154
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Mar 24 2006
STATUS
approved

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Last modified March 29 09:14 EDT 2024. Contains 371268 sequences. (Running on oeis4.)