

A043162


Numbers k such that 1 and 5 occur juxtaposed in the base8 representation of k but not of k1.


0



13, 41, 77, 104, 141, 169, 205, 233, 269, 297, 328, 361, 397, 425, 461, 489, 525, 553, 589, 616, 653, 681, 717, 745, 781, 809, 832, 909, 937, 973, 1001, 1037, 1065, 1101, 1128, 1165, 1193, 1229, 1257, 1293, 1321, 1352, 1385
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


LINKS



MATHEMATICA

j15Q[n_]:=Module[{idn8=IntegerDigits[n, 8]}, SequenceCount[idn8, {1, 5}]>0  SequenceCount[idn8, {5, 1}]>0]; Transpose[ SequencePosition[Table[If[ j15Q[k], 1, 0], {k, 1500}], {0, 1}]][[2]] (* The program uses the SequenceCount and SequencePosition functions from Mathematica version 10 *) (* Harvey P. Dale, Aug 09 2015 *)


CROSSREFS



KEYWORD

nonn,base


AUTHOR



STATUS

approved



