A171698 - OEIS

A171698

Square 'central binomial coefficients'-array read by antidiagonals

1, 1, 1, 2, 2, 2, 6, 6, 4, 4, 20, 20, 14, 8, 8, 70, 70, 50, 30, 16, 16, 252, 252, 182, 112, 62, 32, 32, 924, 924, 672, 420, 238, 126, 64, 64

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

OFFSET

1,4

COMMENTS

Antidiagonals sum up to A000984.

LINKS

EXAMPLE

Example with 0's added:

0,1,1,2,4,8,..

0,1,2,4,8,16,..

0,2,6,14,30,..

Row 2 (binomial): 0+1=1,1+1=2,...

Row 3 (trinomial): 0+1+1=2,2+2+2=6,6+4+4=14...

CROSSREFS

KEYWORD

nonn,tabl

AUTHOR

Mark Dols, Dec 15 2009

STATUS

approved