Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #23 Mar 01 2019 06:21:12
%S 1,11,15,21,28,88,245,396,501,979,1218,1505,1859,2802,3421,6155,18669,
%T 26587,44567,52779,62377,102113,225638,307077,357610,415910,650078,
%U 870815,1006279,1161760,2043984,3544750,4059132,6066082,6924325,7898238,13271830
%N Numbers k such that 2*k is a partition number.
%F a(n) = A052001(n)/2.
%e 11 is in the sequence because 2*11 = 22 and 22 is a partition number: p(8) = A000041(8) = 22.
%t Select[PartitionsP[Range@200]/2, IntegerQ] (* _Giovanni Resta_, May 05 2013 *)
%Y Cf. A000041, A052001, A213365, A216258, A217725, A217726, A222175, A222178, A222179, A225317, A225323.
%K nonn
%O 1,2
%A _Omar E. Pol_, Feb 27 2013