

A222252


In the number n, replace all (decimal) digits '7' with '8' and vice versa.


1



0, 1, 2, 3, 4, 5, 6, 8, 7, 9, 10, 11, 12, 13, 14, 15, 16, 18, 17, 19, 20, 21, 22, 23, 24, 25, 26, 28, 27, 29, 30, 31, 32, 33, 34, 35, 36, 38, 37, 39, 40, 41, 42, 43, 44, 45, 46, 48, 47, 49, 50, 51, 52, 53, 54, 55, 56, 58, 57, 59, 60, 61, 62, 63, 64, 65, 66, 68, 67, 69, 80, 81, 82, 83, 84, 85
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OFFSET

0,3


COMMENTS

The map which is applied to primes in A171048.


LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000


MATHEMATICA

a[n_]:= IntegerDigits[n]/.{7>8, 8>7} // FromDigits; Table[a[n], {n, 0, 80}] (* Vincenzo Librandi, Jul 29 2013 *)


PROG

(PARI) A222252(n, d=[0, 1, 2, 3, 4, 5, 6, 8, 7, 9])=sum(i=1, #n=digits(n), d[n[i]+1]*10^(#ni)) \\ gives correct value for n=0 iff d[1]=0, since digits(0)=[] in PARI (v.2.6)


CROSSREFS

Cf. A222210A222254; A171013A171016, A175770, A171018A171057.
Sequence in context: A308071 A030555 A100708 * A130371 A130372 A089865
Adjacent sequences: A222249 A222250 A222251 * A222253 A222254 A222255


KEYWORD

nonn,base,easy


AUTHOR

M. F. Hasler, Feb 13 2013


EXTENSIONS

Corrected term by Vincenzo Librandi, Jul 29 2013


STATUS

approved



