# A146060 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 1 6 5 7 15 8 27 9 53 10 153 11 487 12 1719 13 7415 14 32545 15 166197 16 903303 17 5463687 18 37085195 19 288519629 20 2455679981 21 24371430209 22 259645240127 23 3154594586943 24 41721327840785 25 629945561496623