# A121352 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 7 5 10 6 24 7 37 8 63 9 112 10 200 11 318 12 607 13 1058 14 1814 15 3247 16 6004 17 10316 18 19048 19 35478 20 63496 21 117023 22 223822 23 408121 24 766661 25 1484363 26 2775201 27 5270079 28 10357605 29 19714259 30 37970066 31 75439670 32 146103241 33 284719527 34 571706625