# A143764 (b-file synthesized from sequence entry) 1 1 2 4 3 36 4 1521 5 2325625 6 5408554896900 7 29252466072845872288372836 8 855706771342998810018458679815602502067088579902649 9 732234078522259249473123638277942895348884466303559008943210424176413224873174808848983192723595659649