# A037247 (b-file synthesized from sequence entry) 0 1 1 -1 2 1 3 -2 4 5 5 -13 6 35 7 -98 8 282 9 -832 10 2505 11 -7662 12 23715 13 -74104 14 233429 15 -740511 16 2363816 17 -7587409 18 24473880 19 -79289278 20 257890856 21 -841789791 22 2756618710 23 -9053837032 24 29817032534 25 -98441372386 26 325753459625 27 -1080250590778