# A033641 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 6 4 2 5 8 6 18 7 62 8 36 9 160 10 392 11 1496 12 1176 13 5664 14 14856 15 61560 16 5664 17 20520 18 102600 19 313464 20 123120 21 539184 22 1514952 23 5207160 24 3569088 25 15498360 26 43342056 27 164591976 28 145524528 29 682642512 30 1966450584 31 8092803816 32 1365285024