OFFSET
1,1
COMMENTS
That is, a(n) is the concatenation of 2n-1 and 2n. - Charles R Greathouse IV, Aug 07 2012
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
FromDigits[Flatten[IntegerDigits/@{#}]]&/@Partition[Range[90], 2] (* Harvey P. Dale, Sep 28 2011 *)
PROG
(Magma) [Seqint(Intseq(n+1) cat Intseq(n)): n in [1..86 by 2]]; // Bruno Berselli, Jun 18 2011
(PARI) a(n)=eval(concat(Str(2*n-1), 2*n)) \\ Charles R Greathouse IV, Jun 18, 2011
CROSSREFS
KEYWORD
base,nonn,easy
AUTHOR
EXTENSIONS
More terms from Erich Friedman.
STATUS
approved