OFFSET
0,3
LINKS
Kenny Lau, Table of n, a(n) for n = 0..1034
Niket Gowravaram, A Variation of the nil-Temperley-Lieb algebras of type A, Preprint, 2015.~
EXAMPLE
Triangle begins:
1,
1,2,
1,4,6,
1,8,14,20,
1,16,30,50,70,
1,32,62,112,182,252,
...
CROSSREFS
KEYWORD
AUTHOR
N. J. A. Sloane, Jun 18 2016
EXTENSIONS
More terms from Kenny Lau, Jun 19 2016
STATUS
approved