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A157427
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Lower left-hand y-coordinates of invisible 1x1 squares with 0 < y < x.
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8
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14, 14, 20, 44, 39, 45, 21, 34, 50, 75, 21, 77, 44, 54, 39, 65, 90, 74, 45, 69, 34, 84, 56, 76, 50, 84, 111, 33, 119, 105, 69, 75, 95, 152, 14, 20, 55, 74, 110, 33, 153, 140, 14, 35, 56, 132, 174, 20, 35, 90
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..50.
Eric Weisstein's World of Mathematics, Visible Point
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EXAMPLE
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{20, 14}, {35, 14}, {35, 20}, {54, 44}, {65, 39}, {69, 45}, {77, 21}, {84, 34}, {84, 50}, {95, 75}, ...
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CROSSREFS
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Cf. A157426, A157428, A157429.
Cf. A325602, A325603, A325604, A325605, A325606, A325607.
Sequence in context: A186128 A105707 A325602 * A003905 A205702 A099203
Adjacent sequences: A157424 A157425 A157426 * A157428 A157429 A157430
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KEYWORD
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nonn
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AUTHOR
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Eric W. Weisstein, Mar 01 2009
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STATUS
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approved
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