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A333187
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a(n) = floor(2^n cot(1/n)).
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4
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1, 7, 23, 62, 157, 380, 889, 2037, 4589, 10205, 22465, 49038, 106285, 228985, 490791, 1047210, 2225653, 4713736, 9952272, 20954040, 44006898, 92211129, 192816394, 402420140, 838413359, 1743970009, 3622221495, 7512996836, 15563085028, 32200323371, 66548900263
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OFFSET
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1,2
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LINKS
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FORMULA
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a(n) = floor(2^n cot(1/n)).
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MATHEMATICA
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z = 50; u = Table[Floor[2^n Csc[1/n]], {n, 1, z}] (* A333186 *)
v = Table[Floor[2^n Cot[1/n]], {n, 1, z}] (* A333187 *)
w = Table[Floor[2^n Csc[1/n] - 2^n Cot[1/n]], {n, 1, z}];
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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