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A126380
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Number of base 26 n-digit numbers with adjacent digits differing by one or less.
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4
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1, 26, 76, 224, 662, 1960, 5810, 17238, 51180, 152040, 451874, 1343530, 3995984, 11888510, 35378800, 105307232, 313517862, 933569352, 2780376498, 8281841754, 24672375600, 73510750578, 219049521636, 652802078652, 1945651872306
(list;
graph;
refs;
listen;
history;
text;
internal format)
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