OFFSET
1,2
LINKS
Jodi Spitz, Table of n, a(n) for n = 1..4002
Rémy Sigrist, PARI program
EXAMPLE
The spiral begins:
33--27--43--34--41--32--35
| |
36 19--14--17--12--15 28
| | | |
47 16 5---4---3 6 37
| | | | | |
44 23 7 1---2 13 26
| | | | |
39 18 9---8--11--10 31
| | |
38 25--20--29--22--21--24
|
49--40--53--46---.---.---.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jodi Spitz, Mar 08 2023
EXTENSIONS
More terms from Rémy Sigrist, Mar 09 2023
STATUS
approved