OFFSET
1,1
COMMENTS
The numbers 2*T(m,n)+19 =(2*n+1)*(2*m+1) are not prime.
First column: A016777, second column: A016885, third column: A016993, fourth column: A017209. - Vincenzo Librandi, Nov 20 2012
LINKS
Vincenzo Librandi, Rows n = 1..100, flattened
EXAMPLE
Triangle begins:
-5;
-2, 3;
1, 8, 15;
4, 13, 22, 31;
7, 18, 29, 40, 51;
10, 23, 36, 49, 62, 75;
13, 28, 43, 58, 73, 88, 103;
16, 33, 50, 67, 84, 101, 118, 135;
19, 38, 57, 76, 95, 114, 133, 152, 171;
22, 43, 64, 85, 106, 127, 148, 169, 190, 211; etc.
MATHEMATICA
t[n_, k_]:=2 n*k + n + k - 9; Table[t[n, k], {n, 15}, {k, n}]//Flatten (* Vincenzo Librandi, Nov 20 2012 *)
PROG
(Magma) [2*n*k + n + k - 9: k in [1..n], n in [1..11]]; // Vincenzo Librandi, Nov 20 2012
CROSSREFS
KEYWORD
AUTHOR
Vincenzo Librandi, Jan 24 2009
STATUS
approved