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A137708
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Secondary Lower Wythoff Sequence.
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3
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1, 2, 5, 6, 7, 8, 11, 12, 15, 16, 17, 18, 21, 22, 23, 24, 27, 28, 31, 32, 33, 34, 37, 38, 41, 42, 43, 44, 47, 48, 49, 50, 53, 54, 57, 58, 59, 60, 63, 64, 65, 66, 69, 70, 73, 74, 75, 76, 79, 80, 83, 84, 85, 86, 89, 90, 91, 92, 95, 96, 99, 100, 101, 102, 105, 106, 109, 110, 111
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OFFSET
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1,2
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COMMENTS
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This sequence is the ordered union of odd numbered columns of the Wythoff secondary array, A137707. See A137707 for complementary equations of which this sequence is a solution.
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LINKS
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FORMULA
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EXAMPLE
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The lower Wythoff sequence begins with 1,3,4,6,8,9,...
Double these: 2,6,8,12,16,18...; subtract 1: 1,5,7,11,15,17;
Then merge: 1,2,5,6,7,8,11,12,15,16,17,18,...
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PROG
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(Python)
from math import isqrt
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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