# A119820 (b-file synthesized from sequence entry) 1 1 2 4 3 27 4 300 5 4790 6 101010 7 2660028 8 84191772 9 3115739358 10 132074618544 11 6311492388432 12 335744715016854 13 19678501474466211 14 1260060524755139120 15 87519840721085385096 16 6553840567691077634748 17 526360263009035464610574