OFFSET
0,3
LINKS
Rémy Sigrist, Table of n, a(n) for n = 0..8318
Rémy Sigrist, PARI program for A334223
EXAMPLE
The "backward" branch of curve U starting from the origin is as follows:
| |
7| -15..-16 -21..-22 -31..-32 -37
| | | | | | | |
6| -14 -17 -20 -23 -30 -33 -36
| | | | | | | |
5| -13 -18..-19 -24 -29 -34..-35
| | | |
4| -12..-11..-10 -25 -28
| | | |
3| -3...-4 -9 -26..-27
| | | |
2| -2 -5 -8
| | | |
1| -1 -6...-7
| |
0| 0
---+-----------------------------------
y/x| 0 1 2 3 4 5 6
- hence a(10) = a(11) = a(12) = a(25) = a(28) = 4.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Apr 19 2020
STATUS
approved