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A256085 Non-palindromic balanced numbers in base 5. 1
140, 170, 202, 232, 266, 296, 328, 358, 392, 422, 454, 484, 518, 548, 635, 660, 685, 710, 735, 765, 790, 815, 840, 865, 877, 895, 902, 920, 927, 945, 952, 970, 977, 995, 1007, 1032, 1057, 1082, 1107, 1128, 1137, 1153, 1162, 1178, 1187, 1203, 1212, 1228, 1237, 1261, 1270, 1286, 1295, 1311, 1320, 1336, 1345, 1361, 1370 (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. Since palindromes (A029952) are trivially balanced, they are excluded here.

This is the base-5 variant of the decimal version A256075 invented by Eric Angelini. See there, and the base-2 version A256082, for further information and examples.

LINKS

Table of n, a(n) for n=1..59.

PROG

(PARI) is(n, b=5, d=digits(n, b), o=(#d+1)/2)=!(vector(#d, i, i-o)*d~)&&d!=Vecrev(d)

CROSSREFS

Cf. A256082 - A256089, A256075, A256080, A029952.

Sequence in context: A114825 A308617 A224982 * A054573 A131492 A276026

Adjacent sequences:  A256082 A256083 A256084 * A256086 A256087 A256088

KEYWORD

nonn,base

AUTHOR

M. F. Hasler, Mar 14 2015

STATUS

approved

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Last modified January 28 22:57 EST 2022. Contains 350669 sequences. (Running on oeis4.)