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Search: id:A056233
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| A056233 |
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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 row 3. |
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+0
8
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| 9, 17, 26, 33, 40, 47, 52, 57, 65, 74, 80, 85, 95, 110, 122, 129, 136, 143, 148, 156, 169, 179, 185, 191, 196, 202, 210, 216, 220, 225, 232, 239, 244, 249, 257, 266, 272, 277, 287, 300, 308, 312, 318, 326, 332, 337, 343, 349, 357, 369, 382
(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, A056234. See also A057153, A052474, A057154, A056230.
Sequence in context: A017077 A004768 A035198 this_sequence A126623 A109333 A081030
Adjacent sequences: A056230 A056231 A056232 this_sequence A056234 A056235 A056236
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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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