# A027546 (b-file synthesized from sequence entry) 1 1 2 3 3 19 4 201 5 3131 6 66883 7 1866103 8 65599089 9 2826880471 10 146161621491 11 8911342572947 12 631575190761529 13 51412581787714291 14 4758212302957048419 15 496284340990942471471 16 57890406722543923973985 17 7501581827512345854197039 18 1073456867163970189613750995