

A155705


Triangle read by rows where T(m,n) = 2*m*n + m + n + 2.


3



6, 9, 14, 12, 19, 26, 15, 24, 33, 42, 18, 29, 40, 51, 62, 21, 34, 47, 60, 73, 86, 24, 39, 54, 69, 84, 99, 114, 27, 44, 61, 78, 95, 112, 129, 146, 30, 49, 68, 87, 106, 125, 144, 163, 182, 33, 54, 75, 96, 117, 138, 159, 180, 201, 222, 36, 59, 82, 105, 128, 151
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OFFSET

1,1


COMMENTS



LINKS



EXAMPLE

Triangle begins:
6;
9, 14;
12, 19, 26;
15, 24, 33, 42;
18, 29, 40, 51, 62;
21, 34, 47, 60, 73, 86;
24, 39, 54, 69, 84, 99, 114;
27, 44, 61, 78, 95, 112, 129, 146;
30, 49, 68, 87, 106, 125, 144, 163, 182;
33, 54, 75, 96, 117, 138, 159, 180, 201, 222; etc.


MATHEMATICA

t[n_, k_]:=2 n*k + n + k + 2; Table[t[n, k], {n, 11}, {k, n}]//Flatten (* Vincenzo Librandi, Nov 20 2012 *)


PROG

(Magma) [2*n*k + n + k + 2: k in [1..n], n in [1..11]]; // Vincenzo Librandi, Nov 20 2012


CROSSREFS



KEYWORD



AUTHOR



STATUS

approved



