# A335807 (b-file synthesized from sequence entry) 0 3 1 8 2 21 3 54 4 140 5 365 6 954 7 2496 8 6533 9 17102 10 44772 11 117213 12 306866 13 803384 14 2103285 15 5506470 16 14416124 17 37741901 18 98809578 19 258686832 20 677250917 21 1773065918 22 4641946836 23 12152774589 24 31816376930 25 83296356200 26 218072691669 27 570921718806 28 1494692464748 29 3913155675437