A024817 - OEIS

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A024817

a(n) = [ 1/(2*t(n+1) - t(n) - t(n+2)) ], where t(n) = tan(Pi/2 - 1/n) satisfies n-1 < t(n) < n for all n >= 1.

%I #6 Apr 11 2021 16:10:13

%S 7,34,87,176,311,499,751,1074,1478,1973,2566,3268,4086,5030,6110,7333,

%T 8710,10248,11957,13847,15925,18202,20685,23384,26309,29467,32869,

%U 36522,40436,44621,49084,53836,58884,64238,69908,75901,82228,88896,95915,103295,111043

%N a(n) = [ 1/(2*t(n+1) - t(n) - t(n+2)) ], where t(n) = tan(Pi/2 - 1/n) satisfies n-1 < t(n) < n for all n >= 1.

%K nonn

%O 1,1

%A _Clark Kimberling_