# A275978 (b-file synthesized from sequence entry) 1 1 2 4 3 6 4 12 5 34 6 54 7 60 8 61 9 73 10 148 11 349 12 552 13 649 14 967 15 1044 16 2521 17 4501 18 5721 19 6133 20 9052 21 9880 22 16126 23 16215 24 19146 25 61770