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A140340 Square array read by rows: T(n,k) = 19*n^2+10*k^2-(n-1)*(20*(k-1)+10), with 14 columns. 2
29, 59, 109, 179, 269, 379, 509, 659, 829, 1019, 1229, 1459, 1709, 1979, 76, 86, 116, 166, 236, 326, 436, 566, 716, 886, 1076, 1286, 1516, 1766, 161, 151, 161, 191, 241, 311, 401, 511, 641, 791, 961, 1151, 1361, 1591, 284, 254, 244, 254, 284, 334, 404, 494, 604, 734, 884, 1054, 1244, 1454 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
Array begins:
29, 59, 109, 179, 269, 379, 509, 659, 829, 1019, 1229, 1459, 1709, 1979;
76, 86, 116, 166, 236, 326, 436, 566, 716, 886, 1076, 1286, 1516, 1766;
161, 151, 161, 191, 241, 311, 401, 511, 641, 791, 961, 1151, 1361, 1591;
284, 254, 244, 254, 284, 334, 404, 494, 604, 734, 884, 1054, 1244, 1454;
445, 395, 365, 355, 365, 395, 445, 515, 605, 715, 845, 995, 1165, 1355;
...
MAPLE
T:=(n, k) -> 19*n^2+10*k^2-(n-1)*(20*(k-1)+10);
CROSSREFS
Cf. A140754 (a very similar array), A140755.
Sequence in context: A293425 A158477 A161928 * A140754 A047078 A073651
KEYWORD
nonn,tabf,less
AUTHOR
Aldrich Stevens (aldrichstevens(AT)msn.com), May 29 2008
EXTENSIONS
Edited by Omar E. Pol and N. J. A. Sloane, Jan 11 2009
STATUS
approved

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Last modified March 4 10:03 EST 2024. Contains 370528 sequences. (Running on oeis4.)