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A239311 a(n) = floor(((1+sqrt(n))/2)^n). 0

%I #11 Jul 19 2021 19:12:05

%S 1,1,1,2,5,11,26,66,180,512,1524,4734,15291,51200,177256,633102,

%T 2328306,8801492,34147724,135789397,552761344,2300896695,9783811169,

%U 42459259013,187899387609,847288609443,3890278628308,18175510564018,86354070880785,416985884011492

%N a(n) = floor(((1+sqrt(n))/2)^n).

%t Table[Floor[((1 + Sqrt[n])/2)^n], {n, 0, 30}] (* _Giovanni Resta_, Mar 15 2014 *)

%Y Cf. A125895.

%K nonn

%O 0,4

%A _Jon Perry_, Mar 15 2014

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Last modified March 28 08:02 EDT 2024. Contains 371236 sequences. (Running on oeis4.)