OFFSET
1,1
COMMENTS
7453355, 9147666, 19073886, 61622814, 648402306, 22023958326, 748181603526 are also terms. - Jinyuan Wang, Jul 28 2020
LINKS
Michael A. Bennett, Lucas' square pyramid problem revisited, Acta Arithmetica 105 (2002), 341-347.
Michel Marcus and Jinyuan Wang, PARI program
EXAMPLE
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Michel Marcus, Jun 18 2020
EXTENSIONS
a(12) from Michel Marcus, Jun 24 2020
a(13)-a(15) from Jinyuan Wang, Jul 28 2020
STATUS
approved