# A351932 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 2 5 6 6 16 7 36 8 106 9 442 10 1786 11 6106 12 23596 13 120836 14 631632 15 2854216 16 13590396 17 81258556 18 510768316 19 2839808572 20 16008902296 21 108643656136 22 787965516416 23 5161270717296 24 33513036683512 25 253407796702776 26 2065728484459576 27 15485032349429176 28 113510664648701776