login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A316326 Indices of 3's in A305389. 5
2, 4, 7, 8, 11, 13, 16, 18, 21, 22, 25, 27, 30, 33, 35, 38, 39, 42, 44, 47, 48, 51, 53, 56, 59, 61, 64, 65, 68, 70, 73, 75, 78, 79, 82, 84, 87, 90, 92, 95, 96, 99, 101, 104, 106, 109, 110, 113, 115, 118, 121, 123, 126, 127, 130, 132, 135, 136, 139, 141, 144, 147, 149, 152, 153, 156, 158, 161, 163, 166, 167, 170, 172 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MAPLE
f:= 'f':
f(1):= 2: f(2):= 3: f(3):= (1, 2, 3):
S:= [1];
for i from 1 to 5 do T:= map(f, S); U:= map(f, T); S:= map(f, U); od:
select(t -> S[t+1]=3, [$0..nops(S)-1]); # Robert Israel, May 07 2019
CROSSREFS
Cf. A305389.
A316324, A316325, A316326 have the same relation to A305389 as A003144, A003145, A003146 do to the ternary tribonacci word A080843 (or A092782).
Sequence in context: A187834 A261619 A187575 * A074204 A030355 A288307
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jul 09 2018
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)