# A006499 (b-file synthesized from sequence entry) 0 1 1 3 2 9 3 12 4 16 5 28 6 49 7 77 8 121 9 198 10 324 11 522 12 841 13 1363 14 2209 15 3572 16 5776 17 9348 18 15129 19 24477 20 39601 21 64078 22 103684 23 167762 24 271441 25 439203 26 710649 27 1149852 28 1860496 29 3010348 30 4870849 31 7881197 32 12752041 33 20633238 34 33385284 35 54018522 36 87403801 37 141422323 38 228826129