A080933 Smallest non-occurring pairwise difference between the elements of a Mian-Chowla sequence (A005282) variant starting with (1,n).

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

Offset: 2

Author

Hugo Pfoertner, Feb 24 2003

Keywords

• nonn

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.

Examples

			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.
		

References

• See under A005282.

Links

• Hugo Pfoertner, FORTRAN program to create the Mian-Chowla sequence
• Hugo Pfoertner, Illustration of the first 1000 terms..

Crossrefs

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