# A000565 (b-file synthesized from sequence entry) 7 31 8 696 9 5823 10 29380 11 108933 12 327840 13 848380 14 1958004 15 4130895 16 8107024 17 14990889 18 26372124 19 44470165 20 72305160 21 113897310 22 174496828 23 260846703 24 381480456 25 547057075 26 770735316 27 1068589557 28 1460069392 29 1968505152 30 2621661540