A138822 Concatenation of n-th prime and n-th Fibonacci number.

21, 31, 52, 73, 115, 138, 1713, 1921, 2334, 2955, 3189, 37144, 41233, 43377, 47610, 53987, 591597, 612584, 674181, 716765, 7310946, 7917711, 8328657, 8946368, 9775025, 101121393, 103196418, 107317811, 109514229, 113832040, 1271346269

Offset

1,1

Links

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

Example

a(10)=2955 because A000040(10)=29 and A000045(10)=55.

Mathematica

With[{nn=50}, FromDigits[Flatten[IntegerDigits[#]]]&/@Thread[ {Prime[ Range[ nn]], Fibonacci[Range[nn]]}]] (* Harvey P. Dale, Jul 12 2014 *)

Prog

(Magma) [Seqint(Intseq(Fibonacci(n)) cat Intseq(NthPrime(n))): n in [1..50]]; // Vincenzo Librandi, Jul 24 2019

Crossrefs

Cf. A000040, A000045, A045532, A075110, A138821.

Sequence in context: A077687 A113762 A032585 * A104297 A106324 A208293

Adjacent sequences: A138819 A138820 A138821 * A138823 A138824 A138825

Keyword

base,easy,nonn

Author

Omar E. Pol, Apr 05 2008

Status

approved