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A276978 a(n) = (ceiling(n/2))^n. 3

%I #13 Jan 24 2024 10:56:46

%S 1,1,8,16,243,729,16384,65536,1953125,9765625,362797056,2176782336,

%T 96889010407,678223072849,35184372088832,281474976710656,

%U 16677181699666569,150094635296999121,10000000000000000000,100000000000000000000,7400249944258160101211

%N a(n) = (ceiling(n/2))^n.

%C Functions from [n] to [n] with f(i) odd for all i.

%C Apart from initial term first differs from A132377 at a(9).

%C With a(1) = 0: AGM transform of A000035. See A368366 for the definition of the AGM transform. - _Alois P. Heinz_, Jan 24 2024

%t Table[Ceiling[n/2]^n, {n, 1, 21}]

%o (PARI) a(n)= ceil(n/2)^n; \\ _Michel Marcus_, Oct 08 2016

%Y Cf. A206344, A276979 (other similar classes of endofunctions).

%Y Cf. A000035, A368366.

%K nonn,easy

%O 1,3

%A _Olivier GĂ©rard_, Sep 23 2016

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Last modified April 18 21:51 EDT 2024. Contains 371781 sequences. (Running on oeis4.)