OFFSET
0,3
COMMENTS
The map which is applied to primes in A171037.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
MATHEMATICA
a[n_]:= IntegerDigits[n]/.{3->7, 7->3} // FromDigits; Table[a[n], {n, 0, 80}] (* Vincenzo Librandi, Jul 30 2013 *)
PROG
(PARI) A222237(n, d=[0, 1, 2, 7, 4, 5, 6, 3, 8, 9])={sum(i=1, #n=digits(n), d[n[i]+1]*10^(#n-i), !n*d[1])} \\ N.B.: digits(0)=[] in PARI (v.2.6)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
M. F. Hasler, Feb 13 2013
STATUS
approved