A095832 Triangle read by rows: T(n,k) = (n-k+1)*(n-k), n>=1, 1<=k<=n.

0, 2, 0, 6, 2, 0, 12, 6, 2, 0, 20, 12, 6, 2, 0, 30, 20, 12, 6, 2, 0, 42, 30, 20, 12, 6, 2, 0, 56, 42, 30, 20, 12, 6, 2, 0, 72, 56, 42, 30, 20, 12, 6, 2, 0, 90, 72, 56, 42, 30, 20, 12, 6, 2, 0, 110, 90, 72, 56, 42, 30, 20, 12, 6, 2, 0, 132, 110, 90, 72, 56, 42, 30, 20, 12, 6, 2, 0

Offset: 1

Author

Herman Jamke (hermanjamke(AT)fastmail.fm), Jul 10 2004

Keywords

• easy
• nonn
• tabl

Examples

			Triangle begins:
   0;
   2,  0;
   6,  2, 0;
  12,  6, 2, 0;
  20, 12, 6, 2, 0;
  ...
		

Links

• Michel Marcus, Rows n=1..100 of triangle, flattened (terms 1..1000 from Harvey P. Dale)

Crossrefs

Cf. A002378.

Programs

Mathematica

Table[(n-k+1)(n-k),{n,20},{k,n}]//Flatten (* Harvey P. Dale, Apr 17 2016 *)