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A127833
T(3n,2n), where T is the array in A127832.
1
0, 4, 54, 954, 19116, 412430, 9343712, 219173604, 5276758498, 129640779394
OFFSET
0,2
EXAMPLE
The 4 UR paths counted by a(1)=T(3,2) are RRRUU, RRURU, UURRR, URURR. These
paths touch the line y=2x/3 only at the lattice points (0,0) and (3,2).
CROSSREFS
Cf. A127832.
Sequence in context: A221611 A303048 A304556 * A346291 A258846 A093983
KEYWORD
nonn
AUTHOR
Clark Kimberling, Feb 01 2007
STATUS
approved