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A058352 a(n) Sum_{d|n, 1<=d<n} d*A000084(d). 6

%I #7 Aug 04 2022 15:51:14

%S 0,1,1,5,1,17,1,45,13,125,1,453,1,1265,133,4221,1,14201,1,46405,1273,

%T 155501,1,531789,121,1792809,13801,6126333,1,21032793,1,72121853,

%U 155509,248396797,1381,857944149,1,2964896881,1792817,10269600621,1,35628546989,1

%N a(n) Sum_{d|n, 1<=d<n} d*A000084(d).

%D Z. A. Lomnicki, Two-terminal series-parallel networks, Adv. Appl. Prob., 4 (1972), 109-150.

%p A058352 := proc(n) local d,t1; t1 := 0; for d from 1 to n-1 do if n mod d = 0 then t1 := t1+d*A000084(d); fi; od; t1; end;

%Y Cf. A000084, A006349, A006350, A058351, A058353, A000669.

%K nonn

%O 0,4

%A _N. J. A. Sloane_, Dec 16 2000

%E More terms from _Sean A. Irvine_, Aug 04 2022

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Last modified May 8 19:26 EDT 2024. Contains 372341 sequences. (Running on oeis4.)