# A134981 (b-file synthesized from sequence entry) 0 1 1 0 2 2 3 10 4 135 5 2288 6 53795 7 1625958 8 61408620 9 2823039912 10 154822101975 11 9964508664900 12 742498325393077 13 63327680888719284 14 6122351446047588778 15 665295048647712247030 16 80666327472879792796515 17 10842875860595742916865856 18 1606496634499026283898516527