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A062923 Numbers k that, when expressed in base 4 and then interpreted in base 8, give a multiple of k. 12

%I #13 Feb 10 2024 18:54:03

%S 0,1,2,3,4,8,12,16,30,32,48,64,120,128,166,192,256,278,480,512,664,

%T 765,768,1024,1112,1390,1682,1803,1920,2048,2426,2656,3060,3072,4096,

%U 4365,4448,5446,5560,6728,7212,7441,7680,8192,9704,9945,10624,12240,12288,16384,17460

%N Numbers k that, when expressed in base 4 and then interpreted in base 8, give a multiple of k.

%H Harvey P. Dale, <a href="/A062923/b062923.txt">Table of n, a(n) for n = 1..100</a>

%e 8 in base 4 is 20, which interpreted in base 8 is 16 = 2*8.

%t Join[{0},Select[Range[18000],Mod[FromDigits[IntegerDigits[#,4],8],#]==0&]] (* _Harvey P. Dale_, Feb 10 2024 *)

%Y Cf. A062845, A062846, A062847, A062848, A062849, A062850, A062853, A062864, A062865, A062884, A062889, A062891, A062920, A062921, A062922, A062925, A062928, A062929, A062930, A062931, A062934, A062937, A062939, A062942, A062943, A062944.

%K base,nonn

%O 1,3

%A _Erich Friedman_, Jul 21 2001

%E Offset changed to 1 and more terms from _Georg Fischer_, Mar 13 2023

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)