# A186369 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 4 4 20 5 100 6 568 7 3480 8 23552 9 172280 10 1369600 11 11687996 12 107154944 13 1046876220 14 10891574272 15 119977808752 16 1397745975296 17 17147547551920 18 221248695107584 19 2992325932512948 20 42370119842398208 21 626422742409351380 22 9659199474524225536 23 154997830582262971784