OFFSET
2,1
COMMENTS
EXAMPLE
The first six consecutive lucky numbers for which the fifth difference is 0 are (31, 33, 37, 43, 49, 51), so a(5) = 31. The successive differences are (2, 4, 6, 6, 2), (2, 2, 0, -4), (0, -2, -4), (-2, -2), and (0).
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Pontus von Brömssen, Dec 08 2021
STATUS
approved