# A007315 (b-file synthesized from sequence entry) 1 1 2 -1 3 1 4 -1 5 0 6 4 7 -16 8 46 9 -111 10 228 11 -379 12 389 13 393 14 -3810 15 14169 16 -39735 17 91861 18 -172623 19 225378 20 10246 21 -1347935 22 5843671 23 -17779693 24 43942706 25 -89033228 26 133666868 27 -64088688 28 -508956437 29 2636138606 30 -8664888857 31 22760994036 32 -49429259575