# A006317 (b-file synthesized from sequence entry) 1 1 2 3 3 7 4 12 5 19 6 27 7 37 8 46 9 58 10 71 11 86 12 102 13 121 14 137 15 157 16 178 17 201 18 225 19 253 20 276 21 304 22 334 23 364