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A080682
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19-smooth numbers: i.e. numbers whose prime divisors are all <= 19.
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11
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1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 48, 49, 50, 51, 52, 54, 55, 56, 57, 60, 63, 64, 65, 66, 68, 70, 72, 75, 76, 77, 78, 80, 81, 84, 85, 88, 90, 91, 95, 96, 98, 99, 100
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listen;
history;
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OFFSET
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1,2
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LINKS
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William A. Tedeschi, Table of n, a(n) for n=1..10000
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PROG
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(PARI) test(n)= {m=n; forprime(p=2, 19, while(m%p==0, m=m/p)); return(m==1)} for(n=1, 200, if(test(n), print1(n", ")))
(MAGMA) [n: n in [1..100] | PrimeDivisors(n) subset PrimesUpTo(19)]; // Bruno Berselli, Sep 24 2012
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CROSSREFS
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For p-smooth numbers with other values of p, see A003586, A051037, A002473, A051038, A080197, A080681, A080683.
Sequence in context: A214922 A004830 A081330 * A182049 A038770 A193176
Adjacent sequences: A080679 A080680 A080681 * A080683 A080684 A080685
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KEYWORD
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easy,nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Mar 02 2003
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STATUS
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approved
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