# A367050 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 29 4 198 5 1469 6 11518 7 93875 8 787392 9 6752175 10 58929541 11 521718814 12 4674070602 13 42296077935 14 386027716280 15 3549332631052 16 32845586854208 17 305685481682970 18 2859315003009776 19 26866125820982711 20 253457922829307765 21 2399910588283502630