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A167689 Natural numbers with swapped twin primes and adjacent nonprimes. 0
1, 2, 4, 6, 7, 5, 3, 8, 9, 10, 12, 13, 11, 14, 15, 16, 18, 19, 17, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 31, 29, 32, 33, 34, 35, 36, 37, 38, 39, 40, 42, 43, 41, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 61, 59, 62, 63, 64, 65, 66, 67, 68, 69, 70, 72, 73 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A257578 A272665 A114431 * A058184 A087777 A030118
KEYWORD
nonn
AUTHOR
Giovanni Teofilatto, Nov 09 2009
STATUS
approved

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Last modified June 16 14:12 EDT 2024. Contains 373430 sequences. (Running on oeis4.)