# A028221 (b-file synthesized from sequence entry) 0 1 1 36 2 817 3 14964 4 241969 5 3609732 6 50945329 7 691013268 8 9103047217 9 117325825188 10 1487325837361 11 18617531653812 12 230789841098545 13 2839613067896004 14 34737008397752113 15 423047207066166996