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