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A080933 Smallest non-occurring pairwise difference between the elements of a Mian-Chowla sequence (A005282) variant starting with (1,n). 1
33, 49, 26, 15, 30, 19, 44, 13, 38, 50, 54, 58, 44, 46, 25, 20, 45, 10, 13, 84, 38, 15, 71, 33, 35, 54, 31, 16, 57, 10, 42, 26, 15, 14, 33, 14, 15, 32, 34, 16, 25, 28, 25, 16, 36, 16, 16, 25, 28, 40, 16, 31, 33, 28, 15, 31, 15, 22, 31, 33, 15, 21, 49, 51, 28 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

COMMENTS

For large n the sequence consists of increasingly long runs of "33", which is the first term of A080200 (the smallest non-occurring difference in A005282), with some interspersed other terms. E.g. for n=100000..100100 we have a(n)=88 for n=100005,100021,100041,100087,100099, a(100072)=98 and otherwise a(n)=33.

REFERENCES

See under A005282.

LINKS

Table of n, a(n) for n=2..66.

Hugo Pfoertner, FORTRAN program to create the Mian-Chowla sequence

Hugo Pfoertner, Illustration of the first 1000 terms..

EXAMPLE

a(2)=33 because the smallest non-occurring pairwise difference between the terms of A005282 (starting with 1,2) is A080200(1)=33. a(3)=49 because the smallest non-occurring pairwise difference between the terms of A051788 (starting with 1,3) is A080201(1)=49. a(4)=26 because the smallest non-occurring pairwise difference between the terms of A058335 (starting with 1,4) is A080932(1)=26.

PROG

FORTRAN program available at link. Setting of initial terms has to be modified as indicated in the comment.

CROSSREFS

Cf. A005282, A051788, A058335, A080200, A080201, A080932.

Sequence in context: A258697 A204373 A111502 * A328247 A020293 A226698

Adjacent sequences:  A080930 A080931 A080932 * A080934 A080935 A080936

KEYWORD

nonn

AUTHOR

Hugo Pfoertner, Feb 24 2003

STATUS

approved

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Last modified October 23 03:23 EDT 2021. Contains 348211 sequences. (Running on oeis4.)