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Search: id:A067574
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| A067574 |
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Array T(i,j) read by antidiagonals, where T(i,j) is the concatenation of i and j (1<=i, 1<=j). |
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+0
1
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| 11, 21, 12, 31, 22, 13, 41, 32, 23, 14, 51, 42, 33, 24, 15, 61, 52, 43, 34, 25, 16, 71, 62, 53, 44, 35, 26, 17, 81, 72, 63, 54, 45, 36, 27, 18, 91, 82, 73, 64, 55, 46, 37, 28, 19, 101, 92, 83, 74, 65, 56, 47, 38, 29, 110, 111, 102, 93, 84, 75, 66, 57, 48, 39, 210, 111, 121
(list; table; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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The array begins
11 12 13 14 15 16 17 18 19 110 ...
21 22 23 24 25 26 27 28 29 210 ...
31 32 33 34 35 36 37 38 39 310 ...
41 42 43 44 45 46 47 48 49 410 ...
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MATHEMATICA
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a = {}; Do[ a = Append[a, ToExpression[ StringJoin[ ToString[i - j], ToString[j]]]], {i, 2, 13}, {j, 1, i - 1} ]; a
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CROSSREFS
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The antidiagonals are read in the opposite direction to those in A066686.
Adjacent sequences: A067571 A067572 A067573 this_sequence A067575 A067576 A067577
Sequence in context: A071154 A071161 A125886 this_sequence A096312 A031032 A084854
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KEYWORD
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base,easy,nonn,tabl
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 30 2002
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