# A152478 (b-file synthesized from sequence entry) 1 0 2 1 3 2 4 3 5 5 6 8 7 14 8 32 9 108 10 620 11 6998 12 180680 13 12950282 14 3341374218 15 4341810374424 16 43852571179147329 17 5999233370012268208703 18 22578209776617142730549141113 19 5759108920458153526111129552362859699