# A276042 (b-file synthesized from sequence entry) 0 1 1 4 2 16 3 62 4 230 5 812 6 2728 7 8752 8 26944 9 80000 10 230144 11 644096 12 1759744 13 4707328 14 12359680 15 31920128 16 81231872 17 204013568 18 506331136 19 1243217920 20 3022913536 21 7285243904 22 17415274496 23 41321234432 24 97370767360 25 227993976832 26 530713673728