A080792 Numbers which when seen in a mirror are different numbers.

2, 5, 10, 12, 15, 18, 20, 21, 22, 28, 50, 51, 55, 58, 80, 81, 82, 85, 100, 102, 105, 108, 110, 112, 115, 118, 120, 121, 122, 125, 128, 150, 151, 152, 155, 158, 180, 182, 185, 188, 200, 201, 202, 208, 210, 211, 212, 218, 220, 221, 222, 225, 228, 250, 251, 252

Offset

1,1

References

P. Giannopoulos, The Brainteasers, unpublished.

Links

Table of n, a(n) for n=1..56.

Mathematica

Select[Map[FromDigits, Tuples[{0, 1, 2, 5, 8}, 3]], IntegerReverse[#] != FromDigits[IntegerDigits[#] /. {2 -> 5, 5 -> 2}] &] (* Amiram Eldar, Sep 30 2025 *)

Crossrefs

Cf. A053701, A080228.

Sequence in context: A018288 A245480 A393803 * A351062 A182656 A090050

Adjacent sequences: A080789 A080790 A080791 * A080793 A080794 A080795

Keyword

base,easy,nonn

Author

P. Giannopoulos (pgiannop1(AT)yahoo.com), Mar 13 2003

Extensions

Missing terms inserted by Sean A. Irvine, Sep 30 2025

Status

approved