A209156 Triangle read by rows: denominators of Stirling-like triangle of rational numbers.

1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 3, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 3, 4, 2, 2, 1, 1, 1, 3, 3, 1, 3, 1, 1

Offset: 1

Author

N. J. A. Sloane, Mar 05 2012

Keywords

• nonn
• frac
• tabl
• more

Examples

			Triangle begins:
-1,
-1,1,
-1,3/2,-1,
-1,1,-2,1,
-1,5,-5/3,5/2,-1,
-1,1,-5,5/2,-3,1,
-1,7,-7/3,35/4,-7/2,7/2,-1,
-1,4,-28/3,7/3,-14,14/3,-4,1,...
		

Links

• Joseph M. Santmyer, A Stirling like sequence of rational numbers, Discrete Math. 171 (1997), no. 1-3, 229-235. MR1454453.

Crossrefs

Cf. A209155.