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A090228 Products of consecutive members of A090206 (nonprime Fibonacci numbers). 0

%I #7 Jul 05 2022 11:35:31

%S 0,1,8,168,714,1870,7920,54288,229970,602070,2550408,10803704,

%T 28284465,74049690,193864606,821223648,3478759200,9107509825,

%U 23843770274,62423800998,264431464440,1120149658760,2932589879121,7677619978602

%N Products of consecutive members of A090206 (nonprime Fibonacci numbers).

%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 nonprimes: 0, 1, 1, 8, 21 product of consecutive nonprimes: 1, 8, 168

%F a(n) = A090206(n)*A090206(n+1). - _David Wasserman_, Oct 13 2005

%Y Cf. A090206, A000045

%K easy,nonn

%O 0,3

%A _Felix Tubiana_, Jan 22 2004

%E More terms from _David Wasserman_, Oct 13 2005

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Last modified April 19 15:11 EDT 2024. Contains 371794 sequences. (Running on oeis4.)