# A259274 (b-file synthesized from sequence entry) 0 1 1 4 2 12 3 52 4 204 5 804 6 3244 7 12948 8 51756 9 207108 10 828364 11 3313332 12 13253580 13 53014116 14 212055852 15 848224660 16 3392897772 17 13571588484 18 54286358988 19 217145432052 20 868581718860 21 3474326895460 22 13897307565804 23 55589230225428 24 222356920980972 25 889427683862724 26 3557710735299660