# A146725 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 3 6 13 7 35 8 157 9 741 10 4435 11 44453 12 490313 13 6256041 14 104651895 15 2130039209 16 56493398929 17 1931237117101 18 81069750246845 19 4246906418006015 20 279802247495802441