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A118729
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Infinite square array which contains the 8 numbers 4*r^2-3*r, 4*r^2-2*r,...,4*r^2+4*r in row r.
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0
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0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 18, 20, 22, 24, 27, 30, 33, 36, 39, 42, 45, 48, 52, 56, 60, 64, 68, 72, 76, 80, 85, 90, 95, 100, 105, 110, 115, 120
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,10
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COMMENTS
| The numbers in row r span the interval ]8*A000217(r-1),8*A000217(r)].
The first difference between the entries in row r is r.
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EXAMPLE
| The array starts in row r=0 as
.0..0..0..0..0..0..0..0;
.1..2..3..4..5..6..7..8;
10.12.14.16.18.20.22.24;
27.30.33.36.39.42.45.48;
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CROSSREFS
| Sequence in context: A080750 A113768 A122936 * A008726 A022788 A141340
Adjacent sequences: A118726 A118727 A118728 * A118730 A118731 A118732
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KEYWORD
| easy,nonn,tabf
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AUTHOR
| Stuart M. Ellerstein (ellerstein(AT)aol.com), May 21 2006
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EXTENSIONS
| Redefined as a square tabf array and simplified the description - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 20 2010
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