%I #13 Apr 27 2022 19:46:51
%S 0,1,14,216,3145,44252,641640,12305251,163304624,2516300046,
%T 36351200665,542225612642,11012302601310,143163240420331,
%U 2224515456064634,32255340625240206,453016062064453015,6552245200234552232,125142553603416142350
%N Decimal repunits written in base 7.
%F a(n) = A007093(A002275(n)).
%o (PARI) a(n) = fromdigits(digits((10^n-1)/9, 7));
%Y Cf. A002275, A291962, A353142, A353143, A353144, A353145, A353147, A353148.
%Y Cf. A007093, A023000.
%K nonn,base,easy
%O 0,3
%A _Seiichi Manyama_, Apr 26 2022
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