The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A274612 Numbers not divisible by 10 with at least one zero but no two adjacent 0's among its decimal digits. 1
 101, 102, 103, 104, 105, 106, 107, 108, 109, 201, 202, 203, 204, 205, 206, 207, 208, 209, 301, 302, 303, 304, 305, 306, 307, 308, 309, 401, 402, 403, 404, 405, 406, 407, 408, 409, 501, 502, 503, 504, 505, 506, 507, 508, 509, 601, 602, 603, 604, 605, 606, 607, 608, 609, 701, 702, 703, 704, 705, 706, 707, 708, 709, 801, 802, 803, 804, 805, 806, 807, 808, 809, 901, 902, 903, 904, 905, 906, 907, 908, 909, 1011 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Robert Israel, Table of n, a(n) for n = 1..10000 EXAMPLE 101 is a term because 101 = 101 + (1^0 * 0^1); 1010 is a term because 1010 = 1010 + (1^0 * 0^1 * 1^0 ). MAPLE filter:= proc(n) local L; L:= [ListTools:-SearchAll(0, convert(n, base, 10))]; nops(L) >= 1 and L[1]<>1 and not has(L[2..-1]-L[1..-2], 1) end proc: select(filter, [\$1..10000]); # Robert Israel, Jul 24 2016 MATHEMATICA AA = Table[(Product[(Mod[(Floor[f/10^n]), 10])^(Mod[(Floor[f/10^(n - 1)]), 10]), {n, 1, Floor[Log[10, f]]}]), {f, 1, 1200}] BB = Table[n, {n, 1, 1200}] Position[(AA + BB) - BB, 0] PROG (PARI) is(n)=n%10 && vecmin(digits(n))==0 && vecmin(digits(n, 100)) && vecmin(digits(n\10, 100)) \\ Charles R Greathouse IV, Jul 18 2016 CROSSREFS Cf. A134808, A005188. Sequence in context: A296883 A183086 A134808 * A261448 A213312 A261021 Adjacent sequences: A274609 A274610 A274611 * A274613 A274614 A274615 KEYWORD base,easy,nonn,less AUTHOR José de Jesús Camacho Medina, Jun 30 2016 STATUS approved

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

Last modified May 22 06:48 EDT 2024. Contains 372743 sequences. (Running on oeis4.)