# A052629 (b-file synthesized from sequence entry) 0 1 1 4 2 34 3 438 4 7536 5 162120 6 4185360 7 126060480 8 4339278720 9 168038478720 10 7230318681600 11 342214829510400 12 17669683572710400 13 988372892015308800 14 59538455210371737600 15 3842709218808235776000 16 264549049753191211008000