# A007995 (b-file synthesized from sequence entry) 1 5 2 35 3 235 4 1380 5 6711 6 26630 7 89695 8 266305 9 716460 10 1780978 11 4147915 12 9144485 13 19231895 14 38819255 15 75566971 16 142424625 17 260749275 18 464984685 19 809559075 20 1378889190 21 2301674475 22 3771041860 23 6072576655 24 9622868805 25 15021940010