# A088354 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 10 4 24 5 60 6 150 7 376 8 944 9 2372 10 5962 11 14988 12 37684 13 94752 14 238252 15 599090 16 1506440 17 3788036 18 9525280 19 23952020 20 60229184 21 151450970 22 380835368 23 957640640 24 2408063340 25 6055266600 26 15226449480 27 38288118984 28 96278523274 29 242100012876 30 608779761460 31 1530825191912