41644domain: NAppears in sequencesT(n,1) + T(n,2) + ... T(n,n), where T is the array in A026098.at n=38A026101a(n) = Sum_{i=0..n} digsum(i)^4, where digsum(i) = A007953(i).at n=23A231689Sum over all partitions of n into distinct parts of the bitwise XOR of the parts.at n=46A306925