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A125199 Triangle read by rows: T(n,k) = 4*n*k - n - k, 1<=k<=n.

%I A125199 #5 Nov 15 2014 12:50:57
%S A125199 2,5,12,8,19,30,11,26,41,56,14,33,52,71,90,17,40,63,86,109,132,20,47,
%T A125199 74,101,128,155,182,23,54,85,116,147,178,209,240,26,61,96,131,166,201,
%U A125199 236,271,306,29,68,107,146,185,224,263,302,341,380,32,75,118,161,204,247
%N A125199 Triangle read by rows: T(n,k) = 4*n*k - n - k, 1<=k<=n.
%C A125199 A124934 gives the range: for n,k with 1<=k<=n exists at least one m such that A124934(m)=T(n,k);
%C A125199 row sums give A125200; central terms give A125201;
%C A125199 T(n,1) = A016789(n-1);
%C A125199 T(n,2) = A017041(n-1) for n>1;
%C A125199 T(n,3) = A017485(n-1) for n>2;
%C A125199 T(n,n-1) = A125202(n) for n>1;
%C A125199 T(n,n) = A002939(n).
%t A125199 Flatten[Table[4*n*k-n-k,{n,15},{k,n}]] (* _Harvey P. Dale_, Nov 15 2014 *)
%K A125199 nonn,tabl
%O A125199 1,1
%A A125199 _Reinhard Zumkeller_, Nov 24 2006