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%I #10 Jan 08 2014 03:04:08
%S 1,2,3,4,5,6,1,2,3,4,5,6,7,2,3,4,5,6,1,2,3,4,5,6,7,2,3,4,5,6,7,8,3,4,
%T 5,6,1,2,3,4,5,6,7,2,3,4,5,6,7,8,3,4,5,6,7,2,3,4,5,6,1,2,3,4,5,6,7,2,
%U 3,4,5,6,7,2,3,4,5,6,7,2,3,4,5,6,7,8,3
%N Smallest number of hex numbers summing to n.
%C This sequence is to A003215 as A002828 is to A000290, and as A061336 is to A000217.
%H Lars Blomberg, <a href="/A234533/b234533.txt">Table of n, a(n) for n = 1..10000</a>
%e a(21) = 3, because 21 = 19 + 1 + 1 = 7 + 7 + 7, so there are two ways to express 21 as the sum of 3 hex numbers, but no way to express 21 as the sum of 2 hex numbers.
%K nonn
%O 1,2
%A _Allan C. Wechsler_, Dec 27 2013
%E a(27)-a(87) from _Lars Blomberg_, Jan 07 2014
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