A090207 - OEIS

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A090207

Number of factors of n-th nonprime Fibonacci number.

%I #6 Jul 05 2022 11:34:34

%S 1,1,1,3,2,2,2,6,2,3,3,5,2,4,3,2,9,3,2,4,4,7,2,4,3,2,3,10,3,3

%N Number of factors of n-th nonprime Fibonacci number.

%F F(0) = 0; F(1) = 1; F(n) = F(n-1) + F(n-2); F(0:9) = 0, 1, 1, 2, 3, 5, 8, 13, 21, 34 The nonprime numbers are: 0, 1, 1, 8, 21, 34 which have number of factors: 1, 1, 1, 3, 2, 2

%Y Cf. A090206, A000045.

%K easy,nonn

%O 0,4

%A _Felix Tubiana_, Jan 22 2004