# A329673 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 10 4 24 5 60 6 152 7 388 8 1000 9 2592 10 6752 11 17664 12 46368 13 122080 14 322240 15 852464 16 2259552 17 5999552 18 15954560 19 42486592 20 113282048 21 302386304 22 807999744 23 2161077120 24 5785032448 25 15498450944 26 41551965184 27 111478804480 28 299274439680 29 803905119232 30 2160632498176 31 5810087371520