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Search: id:A031884
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| A031884 |
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Smaller of a pair of consecutive lucky numbers with a gap of 2n. |
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+0
3
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| 1, 3, 15, 79, 141, 51, 787, 495, 171, 937, 903, 745, 2851, 1611, 1057, 3811, 5769, 4893, 8719, 10683, 9841, 24073, 9567, 28245, 25687, 3507, 26943, 35743, 44805, 51979, 64723, 23205, 50779, 51475, 264075, 155833, 238057, 178755, 143311, 400591
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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a(n) is the first occurrence of a difference of 2n between A000959(k+1) and A000959(k). - Robert G. Wilson v (rgwv(at)rgwv.com), May 12 2006
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MATHEMATICA
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lst = Range[1, 10^6, 2]; i = 2; While[ i <= (len = Length@lst) && (k = lst[[i]]) <= len, lst = Drop[lst, {k, len, k}]; i++ ]; f[n_] := Block[{k = 1}, While[t[[k + 1]] - t[[k]] != 2n, k++ ]; t[[k]]]; Array[f, 41] (* Robert G. Wilson v *)
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CROSSREFS
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Cf. A000959, A031885, A031883, A031158, A031886, A031888, A031890, A031892, A031894, A031896, A031898, A031900, A031902.
Adjacent sequences: A031881 A031882 A031883 this_sequence A031885 A031886 A031887
Sequence in context: A026115 A027911 A104530 this_sequence A052755 A137957 A002514
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KEYWORD
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nonn
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com)
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(at)rgwv.com), May 12 2006
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