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A125325
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Number of base 15 circular n-digit numbers with adjacent digits differing by 3 or less.
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0
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1, 15, 93, 471, 2773, 16585, 101649, 631513, 3965717, 25103901, 159916563, 1023792939, 6580680769, 42436151201, 274373773501, 1777776831901, 11538964492821, 75001583213817, 488059829837697, 3178929941530215
(list;
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refs;
listen;
history;
text;
internal format)
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