OFFSET
1,1
COMMENTS
EXAMPLE
Triangle starts
2
5, 3
3, 7, 1
4, 5, 1, 11
11, 9, 3, 6, 7
14, 7, 4, 9, 13, 13
6, 15, 2, 6, 27, 11, 19
7, 9, 3, 8, 17, 22, 34, 27
PROG
(PARI) t(n, k) = my(p=prime(n), q=prime(k)); lift(Mod((binomial(2*q-1, q-1)-1)/q^3, p)) + lift(Mod((binomial(2*p-1, p-1)-1)/p^3, q))
trianglerows(n) = for(x=2, n+1, for(y=1, x-1, print1(t(x, y), ", ")); print(""))
trianglerows(8) \\ print initial 8 rows of triangle
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Felix Fröhlich, Jan 19 2017
STATUS
approved