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 A256090 Non-palindromic balanced primes in base 16. 2
 6451, 7717, 8513, 8963, 9601, 10501, 10867, 11317, 11411, 12227, 13829, 14561, 15461, 15733, 16183, 16529, 16979, 18517, 19333, 19427, 19699, 20149, 20233, 20327, 22483, 22567, 23027, 23561, 23833, 25717, 26083, 26261, 26711, 27077, 27527, 27799, 27893, 28867, 29411, 29683, 30133, 30677, 30949, 31033, 31849 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 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. These are the primes in A256080. This is the hexadecimal variant of the decimal version A256076 suggested by Eric Angelini. LINKS Table of n, a(n) for n=1..45. PROG (PARI) is(n, b=16, d=digits(n, b), o=(#d+1)/2)=!(vector(#d, i, i-o)*d~)&&d!=Vecrev(d)&&isprime(n) CROSSREFS Cf. A256080, A256076, A256075, A256082 - A256089, A029732. Sequence in context: A074978 A105377 A248998 * A067928 A166223 A206538 Adjacent sequences: A256087 A256088 A256089 * A256091 A256092 A256093 KEYWORD nonn,base AUTHOR M. F. Hasler, Mar 14 2015 STATUS approved

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Last modified July 18 16:16 EDT 2024. Contains 374388 sequences. (Running on oeis4.)