Search: id:A159977
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%I A159977
%S A159977 1,1,0,0,0,3,0,2,3,4,0,5,0,2,3,4,0,7,20,14,3,2,0,13,4,10,11,16,0,23,4,
               4,
%T A159977 25,10,14,35,6,24,3,2,6,7,0,20,9,48,0,5,28,18,23,14,14,11,16,10,21,4,62,
%U A159977 13,38,12,7,16,12,19,36,28,143,32,58,29,96,100,33,2,30,27,12,62,25,46,
               0
%N A159977 Distance of consecutive Fibonacci terms to nxtprm(n)(0 if already prime)
%H A159977 T. D. Noe, <a href="b159977.txt">Table of n, a(n) for n=1..1000</a>
%F A159977 Fibonacci sequence 1 1 2 3 5 8 13 21 34 . . . . Compute distance to next 
               prime unless already prime.
%e A159977 a(1) and a(2) both = 1 because distance from 1 to nxtprm(2) is 1 in both 
               cases, while a(3), a(4), a(5) are all 0 because 2,3,5 are all prime 
               so 0 distance.
%o A159977 (Other) UBASIC: 10 'FiboA 20 A=1:print A; 30 B=1:print B; 40 C=A+B:print 
               C;:T=T+1 41 if C<>prmdiv(C) then print "<";nxtprm(C)-C;">":else print 
               "<";0;">"; 50 D=B+C:print D; 51 if D<>prmdiv(D) then print "<";nxtprm(D)-D;
               ">":else print "<";0;">"; 60 A=C:B=D:if T>22 then stop:else 40
%o A159977 (PARI) F=1;G=0;for(i=1,100,print1(nextprime(F)-F,",");T=F;F+=G;G=T) [From 
               Hagen von Eitzen (math(AT)von-eitzen.de), Jul 20 2009]
%Y A159977 A159978
%Y A159977 Sequence in context: A143394 A112455 A001608 this_sequence A112974 A113069 
               A136163
%Y A159977 Adjacent sequences: A159974 A159975 A159976 this_sequence A159978 A159979 
               A159980
%K A159977 easy,nonn
%O A159977 1,6
%A A159977 Enoch Haga (Enokh(AT)comcast.net), Apr 28 2009
%E A159977 More terms (cf. b-file) from Hagen von Eitzen (math(AT)von-eitzen.de), 
               Jul 20 2009

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