OFFSET
0,1
COMMENTS
The flattened triangle is essentially the same as A141620.
FORMULA
EXAMPLE
The triangle starts
2;
5, -3;
10,-3,-5;
17,-3,-5,-7;
26,-3,-5,-7,-9;
MAPLE
A133128 := proc(n, m) if m>= 1 then -2*m-1 ; else (n+1)^2+1 ; fi; end: seq(seq(A133128(n, m), m=0..n), n=0..15) ; # R. J. Mathar, Nov 22 2009
CROSSREFS
KEYWORD
AUTHOR
Paul Curtz, Aug 27 2008
EXTENSIONS
Edited and extended by R. J. Mathar, Nov 22 2009
STATUS
approved