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A117764 Lucas numbers for which the sum of the digits is also a Lucas number. 0
1, 3, 4, 7, 29, 47, 322, 2207, 1149851, 10749957122, 119218851371, 312119004989, 505019158607, 84722519070079276, 8784200221406821330636, 1473646213395791149646646123, 2657608295638762232902023676028758508503879 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
EXAMPLE
1149851 is in the sequence because (1) it is a Lucas number and (2)the sum of its digits 1+1+4+9+8+5+1=29 is also a Lucas number.
MATHEMATICA
Module[{nn=300, luc}, luc=LucasL[Range[nn]]; Select[luc, MemberQ[luc, Total[ IntegerDigits[#]]]&]] (* Harvey P. Dale, Apr 19 2018 *)
CROSSREFS
Cf. A000204.
Sequence in context: A042037 A041091 A270373 * A113874 A007677 A042773
KEYWORD
base,nonn
AUTHOR
Luc Stevens (lms022(AT)yahoo.com), Apr 15 2006
EXTENSIONS
More terms from Joshua Zucker, May 11 2006
STATUS
approved

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Last modified February 28 21:38 EST 2024. Contains 370400 sequences. (Running on oeis4.)