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 A256090 #7 Mar 15 2015 01:36:20 %S A256090 6451,7717,8513,8963,9601,10501,10867,11317,11411,12227,13829,14561, %T A256090 15461,15733,16183,16529,16979,18517,19333,19427,19699,20149,20233, %U A256090 20327,22483,22567,23027,23561,23833,25717,26083,26261,26711,27077,27527,27799,27893,28867,29411,29683,30133,30677,30949,31033,31849 %N A256090 Non-palindromic balanced primes in base 16. %C A256090 Here a number is called balanced if the sum of digits weighted by their arithmetic distance from the "center" is zero. Palindromic primes (A029732 in base 16) are trivially balanced, therefore they are excluded here. %C A256090 These are the primes in A256080. This is the hexadecimal variant of the decimal version A256076 suggested by Eric Angelini. %o A256090 (PARI) is(n,b=16,d=digits(n,b),o=(#d+1)/2)=!(vector(#d,i,i-o)*d~)&&d!=Vecrev(d)&&isprime(n) %Y A256090 Cf. A256080, A256076, A256075, A256082 - A256089, A029732. %K A256090 nonn,base %O A256090 1,1 %A A256090 _M. F. Hasler_, Mar 14 2015