OFFSET
1,2
COMMENTS
This sequence has similarities with A005282.
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..10000
Rémy Sigrist, C# program for A333866
EXAMPLE
The first terms, mapped onto a square spiral, are:
65---*---*---*---*---*---*--58--57
| |
66 37---*---*---*---*---*--31 *
| | | |
* 38 17---*---*--14--13 30 55
| | | | | |
* * 18 5---*---3 * * * <-- As the sequence contains 2, 13
| | | | | | | | and 27, it cannot contain 54.
* * * 6 1---2 11 * *
| | | | | | |
70 41 20 7---*---*--10 27 52
| | | | |
* * 21---*---*---*---*--26 *
| | |
* 43--44---*--46---*---*---*--50
|
73---*---*---*---*---*--79---*---*
PROG
(C#) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Apr 08 2020
STATUS
approved