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 A133120 Sum of all n-digit Bell numbers. 1
 9, 67, 1080, 4140, 21147, 794545, 4213597, 27644437, 190899322, 1382958545, 93345011951, 682076806159, 5832742205057, 51724158235372, 474869816156751, 4506715738447323, 44152005855084346, 445958869294805289, 4638590332229999353, 49631246523618756274, 545717047936059989389, 6160539404599934652455 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS For n >= 11, there is at most one Bell number with n digits. - Robert Israel, Mar 17 2019 LINKS Robert Israel, Table of n, a(n) for n = 1..999 Eric Weisstein's World of Mathematics, Bell Number EXAMPLE 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. MAPLE 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: convert(A, list): # Robert Israel, Mar 17 2019 CROSSREFS Cf. A000110. Sequence in context: A155592 A002051 A231192 * A194650 A048742 A121633 Adjacent sequences:  A133117 A133118 A133119 * A133121 A133122 A133123 KEYWORD nonn,base AUTHOR Parthasarathy Nambi, Sep 18 2007 EXTENSIONS More terms from Robert Israel, Mar 17 2019 STATUS approved

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Last modified January 16 16:32 EST 2022. Contains 350376 sequences. (Running on oeis4.)