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A085757
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Differences between successive multiples of either 11 or 19.
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0
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11, 8, 3, 11, 5, 6, 11, 2, 9, 10, 1, 11, 7, 4, 11, 4, 7, 11, 1, 10, 9, 2, 11, 6, 5, 11, 3, 8, 11, 11, 8, 3, 11, 5, 6, 11, 2, 9, 10, 1, 11, 7, 4, 11, 4, 7, 11, 1, 10, 9, 2, 11, 6, 5, 11, 3, 8, 11, 11, 8, 3, 11, 5, 6, 11, 2, 9, 10, 1, 11, 7, 4, 11, 4, 7, 11, 1, 10, 9, 2, 11, 6, 5, 11, 3, 8, 11
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OFFSET
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0,1
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LINKS
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MATHEMATICA
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With[{nn=90}, Differences[Union[Join[11*Range[0, nn], 19*Range[0, nn]]]]] (* Harvey P. Dale, Jan 30 2015 *)
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PROG
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(PARI) maxn=100; i11=0; i19=0; n=1; {until(n>maxn, a=min(i11*11, i19*19); if(n>1, print1(a-last ", "); ); last=a; n++; if(a/11==i11, i11++); if(a/19==i19, i19++); ); }
(Python)
def diff(lst):
return [lst[i+1]-lst[i] for i in range(len(lst)-1)]
def auptomult(N):
return diff(sorted(set([k*i for k in [11, 19] for i in range(N//k+1)])))
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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