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A138821 Concatenation of n-th Fibonacci number and n-th prime. 8
12, 13, 25, 37, 511, 813, 1317, 2119, 3423, 5529, 8931, 14437, 23341, 37743, 61047, 98753, 159759, 258461, 418167, 676571, 1094673, 1771179, 2865783, 4636889, 7502597, 121393101, 196418103, 317811107, 514229109, 832040113, 1346269127 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

EXAMPLE

a(10)=5529 because A000045(10)=55 and A000040(10)=29.

MAPLE

f:= proc(n) local p;

  p:= ithprime(n);

  combinat:-fibonacci(n)*10^(1+ilog10(p))+p

end proc:

seq(f(n), n=1..100); # Robert Israel, Dec 15 2014

MATHEMATICA

With[{nn=40}, FromDigits[Flatten[IntegerDigits/@#]]&/@ Thread[ {Fibonacci[ Range[nn]], Prime[Range[nn]]}]] (* Harvey P. Dale, Dec 23 2011 *)

CROSSREFS

Cf. A000040, A000045, A045532, A075110.

Sequence in context: A118068 A108710 A108709 * A022102 A041292 A041679

Adjacent sequences:  A138818 A138819 A138820 * A138822 A138823 A138824

KEYWORD

base,easy,nonn

AUTHOR

Omar E. Pol, Apr 05 2008, Apr 07 2008

STATUS

approved

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Last modified April 25 00:46 EDT 2017. Contains 285346 sequences.