# A022165 (b-file synthesized from sequence entry) 0 1 1 5 2 6 3 26 4 32 5 136 6 168 7 712 8 880 9 3728 10 4608 11 19520 12 24128 13 102208 14 126336 15 535168 16 661504 17 2802176 18 3463680 19 14672384 20 18136064 21 76825600 22 94961664 23 402264064 24 497225728 25 2106281984 26 2603507712