OFFSET
1,1
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..11035
Rémy Sigrist, PARI program
EXAMPLE
20 and 21 are terms since they both use 7 steps (trajectories 20, 10, 5, 16, 8, 4, 2, 1 and 21, 64, 32, 16, 8, 4, 2, 1).
300, 301 and 302 are terms since they all use 16 steps.
The triangle starts:
7: 20 21
9: 12 13 84 85
11: 52 53 340 341
13: 34 35 212 213 226 227 1364 1365
14: 68 69 70 452 453 454
15: 22 23 140 141 150 151 852 853 908 909 5460 5461
16: 44 45 46 276 277 300 301 302 1812 1813
17: 14 15 92 93 564 565 604 605 3412 3413
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Paul Duckett, Jun 27 2022
STATUS
approved