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A222243 In the number n, replace all (decimal) digits '4' with '8' and vice versa. 1
0, 1, 2, 3, 8, 5, 6, 7, 4, 9, 10, 11, 12, 13, 18, 15, 16, 17, 14, 19, 20, 21, 22, 23, 28, 25, 26, 27, 24, 29, 30, 31, 32, 33, 38, 35, 36, 37, 34, 39, 80, 81, 82, 83, 88, 85, 86, 87, 84, 89, 50, 51, 52, 53, 58, 55, 56, 57, 54, 59, 60, 61, 62, 63, 68, 65, 66, 67, 64, 69, 70, 71, 72, 73, 78, 75 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

The map which is applied to primes in A171045.

LINKS

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

MATHEMATICA

a[n_]:= IntegerDigits[n]/.{4->8, 8->4} // FromDigits; Table[a[n], {n, 0, 80}] (* Vincenzo Librandi, Jul 31 2013 *)

PROG

(PARI) A222243(n, d=[0, 1, 2, 3, 8, 5, 6, 7, 4, 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

Cf. A222210-A222254; A171013-A171016, A175770, A171018-A171057.

Sequence in context: A192646 A100208 A277972 * A264978 A268675 A268385

Adjacent sequences:  A222240 A222241 A222242 * A222244 A222245 A222246

KEYWORD

nonn,base,easy

AUTHOR

M. F. Hasler, Feb 13 2013

STATUS

approved

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Last modified March 23 04:46 EDT 2019. Contains 321422 sequences. (Running on oeis4.)