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A164947 Numbers n such that A004090(n)/A060384(n) is an integer. 1

%I #12 Apr 28 2018 03:14:05

%S 1,2,3,4,5,6,7,10,12,16,20,21,35,56,78,84,97,125,138,184,189,300,418,

%T 437,550

%N Numbers n such that A004090(n)/A060384(n) is an integer.

%C No further terms between 550 and 12000. [_R. J. Mathar_, Sep 27 2009]

%C No further terms up to 50000. - _Michel Marcus_, Apr 28 2018

%o (PARI) isok(n) = my(f=fibonacci(n), d=digits(f)); !(vecsum(d) % #d); \\ _Michel Marcus_, Apr 28 2018

%Y Cf. A004090, A060384.

%K nonn,base,more

%O 1,2

%A _Ctibor O. Zizka_, Sep 01 2009

%E 14 more terms from _R. J. Mathar_, Sep 27 2009

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)