This site is supported by donations to The OEIS Foundation.

 Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS". Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A002441 Squares written in base 8. (Formerly M3408 N1378) 0
 1, 4, 11, 20, 31, 44, 61, 100, 121, 144, 171, 220, 251, 304, 341, 400, 441, 504, 551, 620, 671, 744, 1021, 1100, 1161, 1244, 1331, 1420, 1511, 1604, 1701, 2000, 2101, 2204, 2311, 2420, 2531, 2644, 2761, 3100, 3221, 3344, 3471, 3620, 3751, 4104, 4241 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 REFERENCES N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). V. Thébault, Les Récréations Mathématiques. Gauthier-Villars, Paris, 1952, p. 95. LINKS FORMULA a(n) = A007094(A000290(n)). - Jason Kimberley, Dec 13 2012 MATHEMATICA Table[BaseForm[n^2, 8], {n, 5!}] (* Vladimir Joseph Stephan Orlovsky, May 12 2010 *) Table[FromDigits[IntegerDigits[n^2, 8]], {n, 60}] (* Vincenzo Librandi, Oct 15 2015 *) PROG (MAGMA) [Seqint(Intseq(n^2, 8)): n in [1..60]]; // Vincenzo Librandi, Oct 16 2015 (PARI) a(n)=fromdigits(digits(n^2, 8)) \\ Charles R Greathouse IV, Apr 25 2016 CROSSREFS Cf. A000290, A007094. Sequence in context: A212460 A159801 A008245 * A008053 A038440 A038432 Adjacent sequences:  A002438 A002439 A002440 * A002442 A002443 A002444 KEYWORD nonn,easy,base AUTHOR EXTENSIONS More terms from James A. Sellers, Sep 08 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.