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A082017
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First row of square array T(n,k) with T(1,1) = 1 where antidiagonals are filled alternating upwards and downwards with the smallest number not already used such that the n-th antidiagonal sum is a multiple of n.
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3
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1, 2, 7, 6, 18, 15, 28, 29, 49, 45, 75, 66, 94, 91, 130, 120, 155, 153, 201, 190, 232, 231, 288, 276, 325, 326, 391, 378, 462, 435, 508, 496, 589, 561, 641, 630, 732, 703, 790, 780, 891, 861, 955, 946, 1066, 1035, 1136, 1128, 1257, 1225, 1333, 1326, 1464, 1431
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| T(n,k) begins:
1, 2, 7, 6, 18, 15, ...
4, 5, 8, 14, 16, 27, ...
3, 9, 12, 17, 26, 31, ...
13, 11, 19, 25, 32, 42, ...
10, 20, 24, 33, 41, 50, ...
21, 23, 34, 39, 51, 60, ...
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CROSSREFS
| Cf. A074135, A082018, A082019, A082020, A082002, A082003, A082004, A082005.
Sequence in context: A154200 A089417 A168205 * A072985 A082187 A021365
Adjacent sequences: A082014 A082015 A082016 * A082018 A082019 A082020
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KEYWORD
| nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 05 2003
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EXTENSIONS
| Edited and more terms from Alois P. Heinz (heinz(AT)hs-heilbronn.de), Oct 26 2011
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