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A154878 Numbers whose trajectory under iteration of sum of cubes of digits eventually turns out to be 370 0

%I #3 Nov 21 2010 17:44:20

%S 7,19,34,37,43,58,67,70,85,88,91,109,118,124,139,142,145,148,154,157,

%T 166,169,175,178,181,184,187,190,193,196

%N Numbers whose trajectory under iteration of sum of cubes of digits eventually turns out to be 370

%C All the numbers are of the form 3n+1. The iteration halts at 370 because 370 itself is equal to the sum of its digits cube.

%e Taking 34 as example, 3^3+4^3=91, 9^3+1=730, 7^3+3^3+0^3=370

%K nonn,base

%O 1,1

%A Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 16 2009

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Last modified March 29 06:15 EDT 2024. Contains 371265 sequences. (Running on oeis4.)