# A139292 (b-file synthesized from sequence entry) 1 1 2 4 3 64 4 1024 5 262144 6 4194304 7 1073741824 8 17179869184 9 4398046511104 10 18014398509481984 11 288230376151711744 12 1180591620717411303424 13 302231454903657293676544 14 4835703278458516698824704