# A153996 (b-file synthesized from sequence entry) 0 1 1 2 2 2 3 4 4 8 5 12 6 26 7 101 8 183 9 703 10 2877 11 10411 12 40654 13 329616 14 1193895 15 9029186 16 73784076 17 520396717 18 3984125165 19 63450006981 20 453313410587 21 6773173674923 22 109501240761989 23 1529036617116906 24 23146045371160181 25 731081927354538564