OFFSET
1,2
COMMENTS
Lambda is the function in A002322.
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
EXAMPLE
a(3) = 3 because lambda(1) + lambda(2) + lambda(3) = 1+1+2 > 3.
MAPLE
with(numtheory):for n from 1 to 100 do:ii:=0:for k from 1 to 1000 while(ii=0) do: s:=sum(lambda(i), i=1..k):if s>=n then ii:=1: printf(`%d, `, k):else fi:od:od:
MATHEMATICA
a[n_] := (k = 1; While[ Total[ CarmichaelLambda[ Range[k]]] < n, k++]; k); Table[ a[n], {n, 1, 77}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Michel Lagneau, Jan 21 2012
STATUS
approved