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 A079832 Numbers n such that floor(reverse(n)/n) = 3. 2
 15, 16, 29, 104, 114, 124, 134, 135, 144, 145, 155, 165, 166, 175, 176, 185, 186, 195, 196, 207, 208, 217, 218, 227, 228, 237, 238, 239, 247, 248, 249, 258, 259, 268, 269, 278, 279, 288, 289, 299, 1004, 1013, 1023, 1033, 1043, 1053, 1063, 1073, 1083, 1093 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS First digit of n must be 1,2 or 3. - Robert Israel, Aug 18 2014 LINKS Robert Israel, Table of n, a(n) for n = 1..10000 (n = 1..407 from Edward Jiang) EXAMPLE 15 is a member as floor(51/15) = 3. MAPLE revdigs:= proc(n) local L, nL, k; L:= convert(n, base, 10); nL:= nops(L); add(L[i]*10^(nL-i), i=1..nL); end proc; select(n -> floor(revdigs(n)/n)=3, [\$1..10^4]); # Robert Israel, Aug 18 2014 MATHEMATICA a079832Q[n_Integer] := If[ Floor[FromDigits[Reverse[IntegerDigits[n]]]/n] == 3, True, False ]; a079832[n_Integer] := Select[Range[n], Mod[#, 10] != 0 && a079832Q[#] &]; a079832[1100] (* Michael De Vlieger, Aug 17 2014 *) PROG (ARIBAS) for n := 1 to 1100 do nst := ""; st := itoa(n); for i := 0 to length(st) - 1 do nst := concat(st[i], nst); end; a := atoi(nst); if a div n = 3 then write(n, ", ") end; end; (PARI) for(n=1, 1100, if(floor(eval(concat(Vecrev(Str(n))))/n)==3, print1(n, ", "))) \\ Edward Jiang, Aug 16 2014 (Python) from math import floor for i in range(1, 1100): ....if floor(int(str(i)[::-1])/i)==3: ........print(i) # Edward Jiang, Aug 16 2014 CROSSREFS Cf. A079831. Sequence in context: A342941 A046417 A193566 * A037971 A022105 A041456 Adjacent sequences: A079829 A079830 A079831 * A079833 A079834 A079835 KEYWORD base,nonn AUTHOR Amarnath Murthy, Feb 11 2003 EXTENSIONS Edited and extended by Klaus Brockhaus, Feb 12 2003 STATUS approved

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Last modified December 1 14:09 EST 2023. Contains 367476 sequences. (Running on oeis4.)