A199581 - OEIS

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A199581

Central terms of the triangle in A199333: a(n) = A199333(2*n,n).

1, 2, 7, 29, 107, 431, 1619, 6079, 22937, 87083, 332393, 1273541, 4896103, 18877711, 72968563, 282664351, 1097088989, 4265342057, 16608401041, 64758466127, 252814859149, 988089813541, 3865761355523, 15138431958437, 59333638261529, 232737382916429

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

COMMENTS

a(n) = A199582(2*n).

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 0..75

PROG

(Haskell)

a199581 n = a199333_row (2*n) !! n

CROSSREFS

Cf. A000984, A199333, A199582.