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A062180 Harmonic mean of digits is 2. 1
2, 22, 136, 144, 163, 222, 316, 361, 414, 441, 613, 631, 1236, 1244, 1263, 1326, 1333, 1362, 1424, 1442, 1623, 1632, 2136, 2144, 2163, 2222, 2316, 2361, 2414, 2441, 2613, 2631, 3126, 3133, 3162, 3216, 3261, 3313, 3331, 3612, 3621, 4124, 4142, 4214, 4241 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..45.

MATHEMATICA

Do[ h = IntegerDigits[n]; If[ Sort[h][[1]] != 0 && Length[h]/Apply[Plus, 1/h] == 2, Print[n]], {n, 1, 10^4}]

CROSSREFS

Cf. A062179-A062185, A061383-A061388, A061423-A061425.

Sequence in context: A292452 A292732 A255866 * A244719 A084399 A067057

Adjacent sequences:  A062177 A062178 A062179 * A062181 A062182 A062183

KEYWORD

base,easy,nonn

AUTHOR

Vladeta Jovovic, Jun 12 2001

EXTENSIONS

More terms from Henry Bottomley, Jul 25 2001

STATUS

approved

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Last modified July 21 21:59 EDT 2019. Contains 325199 sequences. (Running on oeis4.)