

A007284


Horizontally symmetric numbers.
(Formerly M4477)


4



0, 1, 3, 8, 10, 11, 13, 18, 30, 31, 33, 38, 80, 81, 83, 88, 100, 101, 103, 108, 110, 111, 113, 118, 130, 131, 133, 138, 180, 181, 183, 188, 300, 301, 303, 308, 310, 311, 313, 318, 330, 331, 333, 338, 380, 381, 383, 388, 800, 801, 803, 808, 810, 811, 813, 818
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OFFSET

0,3


REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).


LINKS

Indranil Ghosh, Table of n, a(n) for n = 0..50000


FORMULA

Numbers using only digits 0, 1, 3 and 8.


PROG

(Python)
allowed = ("0", "1", "3", "8")
def a(n):
return all(x in allowed for x in str(n))
print([i for i in range(50000) if a(i)])
# Indranil Ghosh, Feb 03 2017


CROSSREFS

Cf. A046031.
Sequence in context: A127518 A176118 A151693 * A080892 A177091 A347690
Adjacent sequences: A007281 A007282 A007283 * A007285 A007286 A007287


KEYWORD

nonn,easy,base


AUTHOR

N. J. A. Sloane.


EXTENSIONS

More terms from Henry Bottomley, Feb 14 2000


STATUS

approved



