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 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 (list; graph; refs; listen; history; text; internal format)
 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 EXTENSIONS More terms from Henry Bottomley, Feb 14 2000 STATUS approved

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Last modified December 7 22:27 EST 2022. Contains 358671 sequences. (Running on oeis4.)