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
Examples
a(10)=2955 because A000040(10)=29 and A000045(10)=55.
Links
- Harvey P. Dale, Table of n, a(n) for n = 1..1000
Programs
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Magma
[Seqint(Intseq(Fibonacci(n)) cat Intseq(NthPrime(n))): n in [1..50]]; // Vincenzo Librandi, Jul 24 2019
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Mathematica
With[{nn=50},FromDigits[Flatten[IntegerDigits[#]]]&/@Thread[ {Prime[ Range[ nn]],Fibonacci[Range[nn]]}]] (* Harvey P. Dale, Jul 12 2014 *)