# A019172 (b-file synthesized from sequence entry) 3 0 4 0 5 5 6 3 7 4 8 24 9 36 10 87 11 255 12 530 13 1313 14 3575 15 8397 16 20589 17 54046 18 136731 19 347334 20 903694 21 2349517 22 6123754 23 16067398 24 42311690 25 111788610 26 296037502 27 785670359 28 2090272145 29 5569943701 30 14864225284 31 39738611650