# A094559 (b-file synthesized from sequence entry) 0 0 1 0 2 4 3 16 4 76 5 304 6 1264 7 5056 8 20404 9 81616 10 327184 11 1308736 12 5237776 13 20951104 14 83815744 15 335262976 16 1341097036 17 5364388144 18 21457733104 19 85830932416 20 343324451056 21 1373297804224 22 5493194102464 23 21972776409856 24 87891117178864