12110400domain: NAppears in sequencesSquares of numbers in Perrin sequence.at n=29A192932Number of 4 X n 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=27A207753Number of maximal independent vertex sets (and minimal vertex covers) in the n-antiprism graph.at n=26A290593