# A099732 (b-file synthesized from sequence entry) 1 1 2 2 3 6 4 24 5 24 6 72 7 144 8 1152 9 1296 10 2304 11 6912 12 82944 13 82944 14 165888 15 497664 16 7962624 17 15925248 18 47775744 19 191102976 20 191102976 21 573308928 22 1146617856 23 13759414272 24 13759414272 25 27518828544 26 82556485632