This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A131058 List of numbers n whose reverse, R(n), is not less than n. 2
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 22, 23, 24, 25, 26, 27, 28, 29, 33, 34, 35, 36, 37, 38, 39, 44, 45, 46, 47, 48, 49, 55, 56, 57, 58, 59, 66, 67, 68, 69, 77, 78, 79, 88, 89, 99, 101, 102, 103, 104, 105, 106, 107, 108, 109, 111, 112, 113, 114, 115 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS First terms not in A009993 are 11, 22, 33, etc. LINKS David A. Corneth, Table of n, a(n) for n = 1..10000 MATHEMATICA Select[Range[0, 200], FromDigits[Reverse[IntegerDigits[ # ]]]>=#&] PROG (PARI) is(n) = my(d=digits(n)); sum(i=1, #d, 10^(#d-i)*d[i]) <= sum(i=1, #d, 10^(i-1)*d[i]) \\ David A. Corneth, Apr 25 2016 (PARI) isok(n) = subst(Polrev(digits(n)), x, 10) >= n; \\ Michel Marcus, Apr 25 2016 CROSSREFS Cf. A002113, A009993. Sequence in context: A254621 A227510 A032898 * A032857 A072544 A009994 Adjacent sequences:  A131055 A131056 A131057 * A131059 A131060 A131061 KEYWORD nonn,base AUTHOR Zak Seidov, Sep 24 2007 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 April 25 22:44 EDT 2019. Contains 322463 sequences. (Running on oeis4.)