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A247337
a(n) = Lucas(n) concatenated with Fibonacci(n).
2
20, 11, 31, 42, 73, 115, 188, 2913, 4721, 7634, 12355, 19989, 322144, 521233, 843377, 1364610, 2207987, 35711597, 57782584, 93494181, 151276765, 2447610946, 3960317711, 6407928657, 10368246368, 16776175025, 271443121393, 439204196418, 710647317811, 1149851514229
OFFSET
0,1
LINKS
MATHEMATICA
Table[FromDigits[Join[Flatten[IntegerDigits[{LucasL[n], Fibonacci[n]}]]]], {n, 0, 50}]
PROG
(Magma) [20] cat [Seqint(Intseq(Fibonacci(n)) cat Intseq(Lucas(n))): n in [1..50]];
CROSSREFS
KEYWORD
nonn,easy,base
AUTHOR
Vincenzo Librandi, Sep 14 2014
STATUS
approved