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A172014 A142459(2*n,n)/(n+1). 0
1, 5, 354, 88153, 48340622, 46980371858, 71465177189700, 157019003242118337, 471091863366049740694, 1851713757075363098855542 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..9.

FORMULA

a(n) = A142459(2*n,n)/(n+1).

MATHEMATICA

A[n_, 1] := 1; A[n_, n_] := 1;

A[n_, k_] := (4*n - 4*k + 1)A[n - 1, k - 1] + (4*k - 3)A[n - 1, k];

a = Table[A[n, k], {n, 20}, {k, n}];

Table[a[[2*n + 1, n + 1]]/(n + 1), {n, 0, 9}]

CROSSREFS

Cf. A142459.

Sequence in context: A235725 A332135 A225578 * A172855 A006108 A061456

Adjacent sequences:  A172011 A172012 A172013 * A172015 A172016 A172017

KEYWORD

nonn

AUTHOR

Roger L. Bagula, Nov 19 2010

STATUS

approved

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Last modified January 27 13:45 EST 2022. Contains 350607 sequences. (Running on oeis4.)