A004727 Delete all 8's from the sequence of nonnegative integers.

0, 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 1, 19, 20, 21, 22, 23, 24, 25, 26, 27, 2, 29, 30, 31, 32, 33, 34, 35, 36, 37, 3, 39, 40, 41, 42, 43, 44, 45, 46, 47, 4, 49, 50, 51, 52, 53, 54, 55, 56, 57, 5, 59, 60, 61, 62, 63, 64, 65, 66, 67, 6, 69, 70, 71

Offset

0,3

Links

Table of n, a(n) for n=0..70.

Prog

(Python)
def A004727(n):
    l = len(str(n))
    m = 8*(10**l-1)//9
    k = n + l - int(n+l < m)
    return 7 if k == m else int(str(k).replace('8', '')) # Chai Wah Wu, Apr 20 2021

Crossrefs

Cf. A004719, A004720, A004721, A004722, A004723, A004724, A004725, A004726, A004728.

Sequence in context: A161659 A089657 A224247 * A102352 A248182 A219227

Adjacent sequences: A004724 A004725 A004726 * A004728 A004729 A004730

Keyword

base,nonn

Author

N. J. A. Sloane

Status

approved