# A087820 (b-file synthesized from sequence entry) 0 7 1 13 2 43 3 103 4 313 5 3463 6 15013 7 195193 8 225223 9 765763 10 4339333 11 3011753743 12 9704539843 13 100280245063 14 2707566616753 15 124286232650865283 16 150451755314205343 17 10760571195298599673 18 211829530101735290743