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A133120
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Sum of all n-digit Bell numbers.
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1
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9, 67, 1080, 4140, 21147, 794545, 4213597, 27644437, 190899322, 1382958545, 93345011951, 682076806159, 5832742205057, 51724158235372, 474869816156751, 4506715738447323, 44152005855084346, 445958869294805289, 4638590332229999353, 49631246523618756274, 545717047936059989389, 6160539404599934652455
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OFFSET
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1,1
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COMMENTS
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For n >= 11, there is at most one Bell number with n digits. - Robert Israel, Mar 17 2019
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LINKS
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EXAMPLE
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Sum of all 1-digit Bell numbers is 9.
Sum of all 2-digit Bell numbers is 67.
Sum of all 3-digit Bell numbers is 1080.
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MAPLE
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N:= 80: # for a(1)..a(N)
A:= Vector(N):
for n from 0 do
b:= combinat:-bell(n);
k:= ilog10(b)+1;
if k > N then break fi;
A[k]:= A[k]+b;
od:
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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