OFFSET
1,2
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..15
MATHEMATICA
Module[{nn=50, cn}, cn=CatalanNumber[Range[0, nn]]; Table[ FromDigits[ Flatten[ IntegerDigits/@ Take[cn, {(n(n+1))/2+1, ((n+1)(n+2))/2}]]], {n, 0, Floor[ (Sqrt[ 8*nn+1]-1)/2]-1}]] (* Harvey P. Dale, May 15 2014 *)
Module[{nn=8}, FromDigits[Flatten[IntegerDigits/@#]]&/@Rest[TakeList[CatalanNumber[Range[0, (nn(nn+1))/2-1]], Range[0, nn-1]]]] (* Harvey P. Dale, Oct 06 2024 *)
CROSSREFS
KEYWORD
easy,nonn,base
AUTHOR
Omar E. Pol, Nov 12 2007
EXTENSIONS
Edited by Charles R Greathouse IV, Apr 25 2010
STATUS
approved