# A027130 (b-file synthesized from sequence entry) 0 1 1 4 2 13 3 40 4 119 5 350 6 1022 7 2973 8 8635 9 25074 10 72850 11 211875 12 616985 13 1799092 14 5253127 15 15358500 16 44958889 17 131759776 18 386557548 19 1135204289 20 3336791503 21 9816315842 22 28900431835 23 85147344488 24 251030187583 25 740539502786