OFFSET
1,2
COMMENTS
See Remmel (2014) for precise definition.
LINKS
Jeffrey B. Remmel, Consecutive Up-down Patterns in Up-down Permutations, Electron. J. Combin., 21 (2014), #P3.2. See p. 25.
EXAMPLE
Triangle begins:
1;
-2, 1;
6, -6, 1;
-23, 36, -15, 1;
106, -229, 160, -37, 1;
-567, 1574, -1566, 650, -93, 1;
3434, -11706, 15248, -9310, 2572, -238, 1;
-23137, 93831, -151933, 123814, -52136, 10175, -616, 1;
...
CROSSREFS
KEYWORD
sign,tabl
AUTHOR
N. J. A. Sloane, Jul 12 2014
STATUS
approved