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A135417 Number of mountain numbers (see A134941) with n digits. 4

%I

%S 1,0,8,56,252,784,1792,3108,4166,4352,3544,2232,1068,376,92,14,1

%N Number of mountain numbers (see A134941) with n digits.

%C The total number is 21846.

%e Contribution from _Reinhard Zumkeller_, May 25 2010: (Start)

%e a(1) = A178334(9) = 1;

%e a(2) = A178334(99) - A178334(9) = 1 - 1 = 0;

%e a(3) = A178334(999) - A178334(99) = 9 - 1 = 8;

%e a(4) = A178334(9999) - A178334(999) = 65 - 9 = 56. (End)

%K base,nonn,fini,full

%O 1,3

%A Suggested by Jonathan Vos Post, Nov 24 2007 and computed by Hans Havermann and Joshua Zucker, Nov 25 2007

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Last modified January 22 18:37 EST 2022. Contains 350488 sequences. (Running on oeis4.)