A140340 - OEIS

%I #16 Oct 22 2023 06:46:07

%S 29,59,109,179,269,379,509,659,829,1019,1229,1459,1709,1979,76,86,116,

%T 166,236,326,436,566,716,886,1076,1286,1516,1766,161,151,161,191,241,

%U 311,401,511,641,791,961,1151,1361,1591,284,254,244,254,284,334,404,494,604,734,884,1054,1244,1454

%N Square array read by rows: T(n,k) = 19*n^2+10*k^2-(n-1)*(20*(k-1)+10), with 14 columns.

%e Array begins:

%e    29,  59, 109, 179, 269, 379, 509, 659, 829, 1019, 1229, 1459, 1709, 1979;

%e    76,  86, 116, 166, 236, 326, 436, 566, 716,  886, 1076, 1286, 1516, 1766;

%e   161, 151, 161, 191, 241, 311, 401, 511, 641,  791,  961, 1151, 1361, 1591;

%e   284, 254, 244, 254, 284, 334, 404, 494, 604,  734,  884, 1054, 1244, 1454;

%e   445, 395, 365, 355, 365, 395, 445, 515, 605,  715,  845,  995, 1165, 1355;

%e ...

%p T:=(n,k) -> 19*n^2+10*k^2-(n-1)*(20*(k-1)+10);

%Y Cf. A140754 (a very similar array), A140755.

%K nonn,tabf,less

%O 1,1

%A Aldrich Stevens (aldrichstevens(AT)msn.com), May 29 2008

%E Edited by _Omar E. Pol_ and _N. J. A. Sloane_, Jan 11 2009