# A028215 (b-file synthesized from sequence entry) 0 1 1 37 2 867 3 16457 4 276563 5 4296369 6 63218779 7 894460009 8 12289771395 9 165102658721 10 2179224895211 11 28361892985881 12 364934200067347 13 4651876568586193 14 58839203762144763 15 739393306409353673