The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A068573 a(n) is the smallest positive integer such that no term in S={a(1),...,a(n)}, n>=3, divides the sum of any two other distinct terms of S, after first initializing the sequence with a(1)=3 and a(2)=4. 0
 3, 4, 6, 16, 31, 43, 67, 79, 163, 175, 223, 235, 343, 475, 487, 559, 823, 847, 967, 979, 1027, 1195, 1279, 2455, 2575, 2611, 2899, 3163, 3199, 3511, 3643, 3691, 5383, 5395, 5647, 6499, 7819, 8287, 8479, 8563, 8599, 9007, 9091, 9115, 10483, 11011 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE a(3) cannot be 5, since 4 divides 3+5; but a(3)=6 since 3 does not divide 4+6, 4 does not divide 3+6 and 6 does not divide 3+4. CROSSREFS Sequence in context: A173944 A092933 A122849 * A138577 A298149 A136242 Adjacent sequences:  A068570 A068571 A068572 * A068574 A068575 A068576 KEYWORD nonn AUTHOR John W. Layman, Mar 26 2002 EXTENSIONS Corrected by T. D. Noe, Oct 25 2006 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 27 19:34 EDT 2021. Contains 347694 sequences. (Running on oeis4.)