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 A214441 Catalan numbers at square positions: a(n) = A000108(n^2). 2
 1, 1, 14, 4862, 35357670, 4861946401452, 11959798385860453492, 509552245179617138054608572, 368479169875816659479009042713546950, 4462290049988320482463241297506133183499654740, 896519947090131496687170070074100632420837521538745909320 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..10. FORMULA a(n) = binomial(2*n^2, n^2) / (n^2 + 1). MATHEMATICA CatalanNumber[Range[0, 10]^2] (* Harvey P. Dale, May 27 2013 *) PROG (PARI) {a(n)=binomial(2*n^2, n^2)/(n^2+1)} for(n=0, 15, print1(a(n), ", ")) CROSSREFS Cf. A135758, A201555. Sequence in context: A188955 A157824 A180588 * A241326 A344689 A159372 Adjacent sequences: A214438 A214439 A214440 * A214442 A214443 A214444 KEYWORD nonn AUTHOR Paul D. Hanna, Jul 17 2012 STATUS approved

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Last modified June 12 10:55 EDT 2024. Contains 373331 sequences. (Running on oeis4.)