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 A248501 Numbers m that are coprime to floor(m/16). 6
 1, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 50, 52, 53, 55, 56, 58, 59, 61, 62, 65, 67, 69, 71, 73, 75, 77, 79, 81, 82, 83, 84, 86, 87, 88, 89, 91, 92, 93, 94, 97, 101, 103, 107, 109, 113, 114, 115 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Definition of 'being coprime' and special-case conventions are as in Wikipedia. In particular, when m<16 then floor(m/16)=0, and zero is coprime only to 1. The complementary sequence is A248502. LINKS Stanislav Sykora, Table of n, a(n) for n = 1..20000 Wikipedia, Coprime integers FORMULA gcd(a(n),floor(a(n)/16)) = 1. EXAMPLE 1 is a member because gcd(1,0)=1. 2 is not, because gcd(2,0)=2. 129 is a member because 129 and floor(129/16)=8. PROG (PARI) a=vector(20000); i=n=0; while(i++, if(gcd(i, i\16)==1, a[n++]=i; if(n==#a, break))); a CROSSREFS Cf. A248499, A248500, A248502. Sequence in context: A262460 A190582 A004457 * A115420 A250038 A296754 Adjacent sequences:  A248498 A248499 A248500 * A248502 A248503 A248504 KEYWORD nonn,base,easy AUTHOR Stanislav Sykora, Oct 07 2014 STATUS approved

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Last modified June 22 17:18 EDT 2021. Contains 345388 sequences. (Running on oeis4.)