%I #11 Aug 25 2019 13:21:53
%S 1,1,4,5,26,22,120,149,418,716,2036,2378,8178,12846,29294,50709,
%T 131054,193972,524268,843260,1979520,3488618,8388584,13190042,
%U 33501276,56707912,129527950,227113934,536870882,887838482,2147483616
%N a(n) = 2^n - A056045(n).
%C If p is prime then a(p) = 2^p-p-1. If p=7, a(7)=120.
%o (PARI) a(n) = 2^n - sumdiv(n, d, binomial(n, d)); \\ _Michel Marcus_, Aug 25 2019
%Y Cf. A000079, A056045.
%K nonn
%O 1,3
%A _Labos Elemer_, Aug 02 2000
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