# A023620 (b-file synthesized from sequence entry) 1 1 2 6 3 18 4 41 5 82 6 152 7 269 8 462 9 778 10 1293 11 2130 12 3488 13 5689 14 9254 15 15026 16 24369 17 39490 18 63960 19 103557 20 167630 21 271306 22 439061 23 710498 24 1149696 25 1860337 26 3010182 27 4870674 28 7881017 29 12751858 30 20633048 31 33385085 32 54018318 33 87403594 34 141422109 35 228825906