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A248379
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Even terms in A247665 in order of appearance.
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7
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2, 4, 8, 14, 16, 32, 64, 128, 122, 244, 256, 512, 866, 1024, 1766, 2048, 4006, 4096, 8192, 8482, 12242, 16384, 32768, 52586, 65536, 105806, 131072
(list;
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listen;
history;
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internal format)
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OFFSET
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1,1
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COMMENTS
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What are the terms that are not powers of 2?
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REFERENCES
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LINKS
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EXAMPLE
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Table (extracted from Russ Cox's extended table in A247665) showing index where even numbers appear, the even number, and the number of different prime factors of that term:
3 4 1
7 8 1
15 14 2
31 16 1
63 32 1
127 64 1
255 128 1
511 122 2
1023 244 2
2047 256 1
4095 512 1
8191 866 2
16383 1024 1
32767 1766 2
65535 2048 1
131071 4006 2
262143 4096 1
524287 8192 1
1048575 8482 2
2097151 12242 2
4194303 16384 1
8388607 32768 1
16777215 52586 2
33554431 65536 1
67108863 105806 2
134217727 131072 1
...
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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