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A248365 4n concatenated with itself. 1
44, 88, 1212, 1616, 2020, 2424, 2828, 3232, 3636, 4040, 4444, 4848, 5252, 5656, 6060, 6464, 6868, 7272, 7676, 8080, 8484, 8888, 9292, 9696, 100100, 104104, 108108, 112112, 116116, 120120, 124124, 128128, 132132, 136136, 140140, 144144, 148148, 152152, 156156 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
a248038[n_Integer] := Module[{m, t}, m := ToString[4 n ]; ToExpression[m <> m]]; a248038 /@ Range[50]; (* Michael De Vlieger, Nov 06 2014 *)
PROG
(Python) {print(str(4*n)*2, end=', ') for n in range(1, 50)} # Derek Orr, Oct 05 2014
CROSSREFS
Cf. A020338 (n), A248038 (3n), A248422 (2n).
Sequence in context: A335481 A345409 A246412 * A044182 A044563 A129289
KEYWORD
nonn,base,easy
AUTHOR
Jacy Fang, Oct 05 2014
STATUS
approved

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Last modified July 19 10:32 EDT 2024. Contains 374392 sequences. (Running on oeis4.)