This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A256080 #5 Mar 15 2015 01:34:35 %S A256080 4144,4416,4688,4866,4960,5138,5232,5410,5504,5635,5682,5776,5907, %T A256080 5954,6048,6179,6226,6320,6404,6451,6498,6592,6676,6723,6770,6864, %U A256080 6948,6995,7042,7136,7173,7220,7267,7314,7408,7445,7492,7539,7586,7717,7764,7811,7858,7942,7989 %N A256080 Non-palindromic balanced numbers in base 16. %C A256080 Here a number is called balanced if the sum of digits weighted by their arithmetic distance from the "center" is zero. Palindromes (A029730) are trivially balanced, therefore they are excluded here. %C A256080 This is the hexadecimal variant of the decimal version A256075 invented by Eric Angelini. See there, and the base-2 version A256082, for further information and examples.See A256090 for the primes in this sequence. %o A256080 (PARI) is(n,b=16,d=digits(n,b),o=(#d+1)/2)=!(vector(#d,i,i-o)*d~)&&d!=Vecrev(d) %Y A256080 Cf. A256082 - A256089, A256075, A256076, A256090. %K A256080 nonn,base %O A256080 1,1 %A A256080 _M. F. Hasler_, Mar 14 2015