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Search: id:A056234
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| A056234 |
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Form an array with 3 rows: row 1 begins with 1; all rows are increasing; each entry is sum of 2 entries above it; each number appears at most once; smallest unused number is appended to first row if possible. Sequence gives numbers not used. |
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+0
8
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| 5, 24, 29, 42, 72, 90, 93, 112, 120, 125, 138, 158, 172, 175, 192, 197, 200, 205, 208, 213, 218, 230, 235, 264, 282, 285, 302, 305, 310, 321, 324, 329, 333, 364, 372, 375, 378, 386, 416, 430, 439, 452, 455, 477, 496, 504, 509, 522, 542, 556
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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Array begins
1 2 4 7 8 10 12 ...
.3 6 11 15 18 ...
. 9 17 26 33 ...
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CROSSREFS
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Cf. A056231, A056232, A056233. See also A057153, A052474, A057154, A056230.
Sequence in context: A120660 A110720 A112613 this_sequence A030766 A063143 A006145
Adjacent sequences: A056231 A056232 A056233 this_sequence A056235 A056236 A056237
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KEYWORD
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nonn,nice,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), E. M. Rains, Aug 22 2000
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