# A052266 (b-file synthesized from sequence entry) 0 1 1 10 2 92 3 738 4 5053 5 29930 6 155904 7 725560 8 3061223 9 11854073 10 42564874 11 142944110 12 452197071 13 1355697097 14 3871729568 15 10579613832 16 27765888553 17 70221521921 18 171635652958 19 406476831574 20 934849110107 21 2092203571359