# A247501 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 0 4 3 5 2 6 -2 7 4 8 12 9 6 10 0 11 -3 12 38 13 60 14 24 15 16 16 -14 17 60 18 330 19 360 20 120 21 0 22 63 23 2 24 1200 25 3000 26 2520 27 720 28 -272 29 274 30 252 31 3066 32 17640 33 29400 34 20160 35 5040 36 0 37 -1383 38 3278 39 8820 40 81144 41 246960 42 312480 43 181440 44 40320