# A038592 (b-file synthesized from sequence entry) 0 1 1 4 2 12 3 32 4 80 5 200 6 472 7 1136 8 2656 9 6256 10 14584 11 34224 12 79328 13 184904 14 427888 15 993880 16 2294792 17 5315464 18 12254112 19 28321960 20 65210608 21 150453824 22 346041800 23 797279272 24 1832029592 25 4215979016 26 9680046176 27 22254415152 28 51061025160