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Search: id:A088228
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| A088228 |
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Number of composite numbers between the smallest primes that surround n# and n#+n. n# = n primorial = product of primes <= n. |
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+0
1
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| 1, 4, 6, 22, 22, 17, 47, 45, 79, 101, 138, 119, 71, 135, 173, 131, 167, 197, 189, 229, 175, 233, 285, 101, 353, 363, 335, 277, 485, 441, 385, 407, 1031, 519, 307, 363, 611, 477, 431, 381, 421, 605, 525, 1343, 605, 1229
(list; graph; listen)
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OFFSET
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2,2
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PROGRAM
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(PARI) primorialgaps(m) = { forprime(n=2, m, c=0; np=primorial(n); for(x=precprime(np), nextprime(np+n), if(!isprime(x), c++)); print1(c", ") ) } primorial(k) = { p=1; forprime(z=1, k, p*=z); return(p) }
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CROSSREFS
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Sequence in context: A026722 A151520 A002270 this_sequence A108636 A101143 A083157
Adjacent sequences: A088225 A088226 A088227 this_sequence A088229 A088230 A088231
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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 04 2003
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