OFFSET
0,5
FORMULA
T(n,k) = A000108(n). - R. J. Mathar, Nov 03 2016
Sum_{n>=0} 1/a(n) = 6 + 44*Pi/(27*sqrt(3)). - Amiram Eldar, Aug 18 2022
EXAMPLE
Triangle begins:
......1
....1,1,1
..2,2,2,2,2
5,5,5,5,5,5,5,
MATHEMATICA
Table[PadRight[{}, 2*n + 1, CatalanNumber[n]], {n, 0, 8}] // Flatten (* Amiram Eldar, Aug 18 2022, after Harvey P. Dale at A172417 *)
CROSSREFS
KEYWORD
nonn,tabf,easy,less
AUTHOR
Mark Dols, Feb 02 2010
EXTENSIONS
Offset corrected by R. J. Mathar, Nov 03 2016
Data corrected and extended by Amiram Eldar, Aug 18 2022
STATUS
approved