67424domain: NAppears in sequencesa(n) = Sum_{d divides n} (-1)^(n/d+1)*d^3.at n=41A078307The generalized Conway-Guy sequence w^{4}.at n=18A195683Number of 7-line partitions of n (i.e., planar partitions of n with at most 7 lines).at n=20A225197