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A358995
Lucas numbers which are the sum of three repdigits.
0
3, 4, 7, 11, 18, 29, 47, 76, 123, 199, 322, 521, 843, 5778
OFFSET
1,1
COMMENTS
Subsequence of A000032, its terms L(2), L(3), ..., L(13), L(14), L(18).
LINKS
Chéfiath A. Adegbindin and Alain Togbé, Can a Lucas number be a sum of three repdigits?, Commentationes Mathematicae Universitatis Carolinae, Vol. 61 (2020), No. 3, 383-396.
Jhon J. Bravo and Jose L. Herrera, Repdigits in generalized Pell sequences, Arch. Math. (Brno), Tomus 56 (2020), 249-262.
EXAMPLE
L(13) = 521: 521 = 333 + 111 + 77, so 521 is a term.
L(14) = 843: 843 = 666 + 111 + 66, so 843 is a term.
CROSSREFS
Cf. A000032.
Sequence in context: A193686 A000204 A075193 * A042433 A024319 A041209
KEYWORD
nonn,fini,full
AUTHOR
Ctibor O. Zizka, Dec 24 2022
STATUS
approved