# A024873 (b-file synthesized from sequence entry) 2 6 3 8 4 26 5 43 6 97 7 156 8 308 9 499 10 915 11 1480 12 2598 13 4204 14 7178 15 11614 16 19476 17 31513 18 52219 19 84492 20 138900 21 224745 22 367509 23 594642 24 968924 25 1567752 26 2548478 27 4123524 28 6692462 29 10828631 30 17556405 31 28406860 32 46023972 33 74468351 34 120596327 35 195128956 36 315902914