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A157429

Lower left-hand y-coordinates of invisible 2x2 squares with 0 < x < y.

12

20, 98, 114, 368, 494, 474, 194, 258, 264, 224, 374, 740, 740, 648, 322, 376, 398, 1000, 1000, 440, 986, 608, 754, 1000, 544, 644, 1034, 1274, 406, 1274, 152, 644, 1274, 50, 1220, 484, 34, 804, 714, 440, 594, 1014, 220, 1000, 1182, 370, 390, 574

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..48.

Eric Weisstein's World of Mathematics, Visible Point

EXAMPLE

{54, 20}, {174, 98}, {550, 114}, {574, 368}, {588, 494}, {608, 474}, ...

CROSSREFS

Cf. A157426, A157427, A157428.

Sequence in context: A264424 A039610 A177498 * A200470 A128676 A039455

Adjacent sequences: A157426 A157427 A157428 * A157430 A157431 A157432

KEYWORD

nonn

AUTHOR

Eric W. Weisstein, Mar 01 2009

STATUS

approved