# A020115 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 19 5 90 6 524 7 3599 8 28342 9 251532 10 2483878 11 27012164 12 320769441 13 4129906549 14 57302453361 15 852373993745 16 13531437150693 17 228343001917932 18 4081631159283028 19 77040788131467136 20 1531185664112909315