40966domain: NAppears in sequencesa(1) = 3; for n>0, a(n+1) = a(n) + floor((a(n)-1)/2).at n=25A003312Number of integer partitions of n whose LCM is 2 * n.at n=60A327780Number of finite sets of compositions with all equal sums and total sum n.at n=16A358904Number of non-subset-sums of strict integer partitions of n.at n=45A365922