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Search: id:A088224
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| A088224 |
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Numbers that fill in the gaps between primes in a list of twin primes. |
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+0
1
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| 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 67, 68, 69, 70, 72, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88
(list; graph; listen)
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OFFSET
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3,1
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COMMENT
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Used the PARI script plus manually inserted the non-twin-prime primes.
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FORMULA
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List the twin primes: 3 5 7 11 13 17 19 29 31 41 43 59 61 ... Then list the numbers between the primes formed by this list to make a list of consecutive integers.
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EXAMPLE
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For the twin prime listing 3 5 7 11
4 between 3 and 5
6 between 5 and 7
8,9,10 between 7 and 11
so 4 6 8 9 10 are in the sequence.
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PROGRAM
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isonum(n) = { for(x=1, n, p1 = prime(x); p2 = prime(x+1); for(y=p1+1, p2-1, print1(y", ") ) ) }
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CROSSREFS
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Adjacent sequences: A088221 A088222 A088223 this_sequence A088225 A088226 A088227
Sequence in context: A104499 A137353 A133576 this_sequence A002808 A018252 A141468
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KEYWORD
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nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Nov 03 2003
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