| 1, -4, 6, -9, 16, -29, 51, -89, 156, -274, 481, -844, 1481, -2599, 4561, -8004, 14046, -24649, 43256, -75909, 133211, -233769, 410236, -719914, 1263361, -2217044, 3890641, -6827599, 11981601, -21026244, 36898486, -64752329, 113632416, -199410989, 349941891, -614105209
(list; graph; listen)
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