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A256084 Non-palindromic balanced numbers in base 4. 1

%I #5 Mar 15 2015 01:35:23

%S 76,114,141,179,206,264,280,296,312,332,348,364,380,386,402,418,434,

%T 454,470,486,502,521,537,553,569,589,605,621,637,643,659,675,691,711,

%U 727,743,759,778,794,810,826,846,862,878,894,1060,1096,1140,1176,1221,1256,1320,1329,1356,1400,1410,1436,1481,1490,1516,1554,1580

%N Non-palindromic balanced numbers in base 4.

%C Here a number is called balanced if the sum of digits weighted by their arithmetic distance from the "center" is zero.

%C This is the base-4 variant of the decimal version A256075 invented by Eric Angelini. See there, and the base-2 version A256082, for further information and examples.

%o (PARI) is(n,b=4,d=digits(n,b),o=(#d+1)/2)=!(vector(#d,i,i-o)*d~)&&d!=Vecrev(d)

%Y Cf. A256082 - A256089, A256075, A256080.

%K nonn,base

%O 1,1

%A _M. F. Hasler_, Mar 14 2015

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Last modified August 1 05:59 EDT 2024. Contains 374810 sequences. (Running on oeis4.)