7601259domain: NAppears in sequencesA Fielder sequence.at n=25A001643a(n) = a(n-1) + a(n-2) + a(n-3), a(0)=3, a(1)=1, a(2)=3.at n=26A001644Sequences A001644 and A000073 interleaved.at n=26A075676Number of total dominating sets in the n-prism graph.at n=12A296102