OFFSET
0,8
COMMENTS
See A365212 for the numerators.
LINKS
Rémy Sigrist, PARI program
FORMULA
T(n, k) = T(n, n - k).
T(n, 0) = 1.
EXAMPLE
Triangle T(n, k) begins:
1
1 1
1 1 1
1 3 3 1
1 3 1 3 1
1 1 5 5 1 1
1 5 5 5 5 5 1
1 5 1 17 17 1 5 1
1 1 5 25 17 25 5 1 1
.
Triangle V(n, k) / V(0, 0) begins:
1
3 3
7 5 7
15 25/3 25/3 15
31 41/3 11 41/3 31
63 22 77/5 77/5 22 63
127 183/5 109/5 93/5 109/5 183/5 127
255 311/5 31 403/17 403/17 31 311/5 255
511 105 226/5 779/25 467/17 779/25 226/5 105 511
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
AUTHOR
Rémy Sigrist, Aug 26 2023
STATUS
approved