login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A299205 Numbers k such that k-1 divides tau(k), where tau(k)=A000594(k) is Ramanujan's tau function. 3
2, 3, 10, 14, 15, 56, 57, 59, 70, 85, 105, 107, 116, 136, 209, 267, 295, 323, 352, 393, 415, 442, 530, 551, 645, 646, 760, 855, 1197, 1288, 1342, 1415, 1472, 1496, 1625, 1765, 1953, 2002, 2255, 2485, 2847, 2945, 3039, 3382, 3591, 3745, 3905, 4233, 4264, 4313 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Numbers k such that A299204(k) = 0.

LINKS

Seiichi Manyama, Table of n, a(n) for n = 1..300

Eric Weisstein's World of Mathematics, Tau Function

PROG

(PARI) isok(n) = (ramanujantau(n) % (n-1)) == 0; \\ Michel Marcus, Feb 05 2018

CROSSREFS

For the sequence when n is prime see A299172.

Cf. A000594, A063938, A299157, A299204.

Sequence in context: A267008 A129315 A171126 * A268878 A194544 A075770

Adjacent sequences:  A299202 A299203 A299204 * A299206 A299207 A299208

KEYWORD

nonn

AUTHOR

Seiichi Manyama, Feb 05 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 22 18:00 EDT 2019. Contains 328319 sequences. (Running on oeis4.)