285856domain: NAppears in sequencesa(n) = 2*a(n-1) + 6*a(n-2), a(0) = 0, a(1) = 1.at n=11A083099Sequence arising from the factorization of F(n)= A083099(n) and L(n)= A127226(n).at n=21A127607Number of regions in a "cross" of width 3 and height n (see Comments for definition).at n=34A331455