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Numbers whose base-7 representation Sum_{i=0..m} d(i)*7^i has d(0) <= d(1) >= d(2) <= ...
1

%I #13 Jan 29 2019 04:18:55

%S 1,2,3,4,5,6,7,8,14,15,16,21,22,23,24,28,29,30,31,32,35,36,37,38,39,

%T 40,42,43,44,45,46,47,48,56,57,63,64,65,70,71,72,73,77,78,79,80,81,84,

%U 85,86,87,88,89,91,92,93,94,95,96,97,112,113,114,119,120,121,122,126,127

%N Numbers whose base-7 representation Sum_{i=0..m} d(i)*7^i has d(0) <= d(1) >= d(2) <= ...

%e a(36)=63 since 63 = 49 + 7 + 7 is written 120 in base 7 and 0 <= 2 >= 1.

%Y Cf. A023763.

%Y Cf. A032845, A032854, A032870, A032886, A032895, A032904.

%K nonn,base

%O 1,2

%A _Clark Kimberling_

%E Corrected by _Henry Bottomley_, Jul 03 2000