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A224729
Central terms of the triangle in A059283.
2
1, 2, 14, 138, 1522, 17740, 213642, 2628626, 32833226, 414697740, 5282720764, 67750624480, 873653602902, 11316723314858, 147143725788662, 1919360958676866, 25105597581410410, 329174706398378884, 4325098764217263996, 56934186664360843064
OFFSET
0,2
COMMENTS
a(n) = A059283(2*n,n).
PROG
(Haskell)
a224729 n = a059283 (2*n) n
CROSSREFS
Sequence in context: A317356 A375507 A336182 * A355722 A303395 A301271
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Apr 17 2013
STATUS
approved