The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 3 04:22 EST 2021. Contains 349445 sequences. (Running on oeis4.)