# A336758 (b-file synthesized from sequence entry) 0 1 1 3 2 6 3 12 4 24 5 42 6 78 7 144 8 264 9 486 10 894 11 1620 12 2964 13 5376 14 9798 15 17760 16 32292 17 58398 18 105960 19 191466 20 346854 21 626172 22 1132800 23 2043246 24 3692406 25 6655068 26 12015126 27 21641526 28 39039810 29 70277016 30 126682584 31 227928780 32 410605008 33 738423492 34 1329477732