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a(n) = n-th pi-based antiderivative of 1.
2

%I #13 Jun 29 2015 18:33:58

%S 1,2,3,5,11,10,29,78,141,266,147,194,1181,2413,1834,6293,4805,20290,

%T 28345,25065,85334,87967,55722,191559,385845,437914,998758,396375,

%U 95625,202043,341774,2217782,1607613,1333107,1697893,1222517,2277354,1599111

%N a(n) = n-th pi-based antiderivative of 1.

%F a(n) = min { m >= 0 : A258851^n(m) = 1 }.

%F A258850(a(n),n) = 1.

%e a(6) = 29 -> 10 -> 11 -> 5 -> 3 -> 2 -> 1.

%e a(7) = 78 -> 127 -> 31 -> 11 -> 5 -> 3 -> 2 -> 1.

%Y Row n=1 of A259016.

%Y Cf. A000720, A258850, A258851.

%K nonn

%O 0,2

%A _Alois P. Heinz_, Jun 18 2015