OFFSET
1,1
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
Chris K. Caldwell and G. L. Honaker, Jr., Prime Curios! 1027569834
EXAMPLE
a(5) = 53 because if n=5 then pi(5)=3, therefore concatenation gives 53.
MAPLE
a:= n-> parse(cat(n, numtheory[pi](n))):
seq(a(n), n=1..60); # Alois P. Heinz, Dec 28 2018
PROG
(PARI) a(n) = eval(concat(Str(n), Str(primepi(n)))); \\ Michel Marcus, Dec 29 2018
CROSSREFS
KEYWORD
nonn,base
AUTHOR
G. L. Honaker, Jr., Dec 26 2018
STATUS
approved