A358995 Lucas numbers which are the sum of three repdigits.

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

Table of n, a(n) for n=1..14.

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

Adjacent sequences: A358992 A358993 A358994 * A358996 A358997 A358998

Keyword

nonn,fini,full

Author

Ctibor O. Zizka, Dec 24 2022

Status

approved