# A082128 (b-file synthesized from sequence entry) 0 21 1 4 2 5 3 13 4 8 5 2 6 32 7 16 8 64 9 512 10 131072 11 4194304 12 8589934592 13 9007199254740992 14 75557863725914323419136 15 20769187434139310514121985316880384