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A372252 a(n) = A000045(n+1)*A000292(n) (product of a Fibonacci number and a tetrahedral number). 0

%I #9 Apr 24 2024 12:50:53

%S 0,1,8,30,100,280,728,1764,4080,9075,19580,41184,84812,171535,341600,

%T 671160,1303152,2503896,4766340,8997450,16856840,31366181,58001768,

%U 106646400,195065000,355074525,643465368,1161281394

%N a(n) = A000045(n+1)*A000292(n) (product of a Fibonacci number and a tetrahedral number).

%F G.f.: -x*((x^2+1)*(x^2-4*x-1))/(x^2+x-1)^4.

%Y Cf. A000045, A000292.

%K nonn

%O 0,3

%A _Vladimir Kruchinin_, Apr 24 2024

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Last modified June 25 18:39 EDT 2024. Contains 373707 sequences. (Running on oeis4.)