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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A278582 Numbers n such that the Shimura subgroup Sigma(n) of the Jacobi variety J_0(n) has order 2. 1
20, 21, 24, 32, 48, 64, 72, 96, 100, 144, 147, 199, 288, 576 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

Ling, S., and J. Oesterlé. "The Shimura subgroup of J_0(N)." Astérisque, Vol. 196-197 (1991), 171-203.

LINKS

Table of n, a(n) for n=1..14.

CROSSREFS

Cf. A278581.

Sequence in context: A125663 A241850 A138601 * A218539 A295488 A008940

Adjacent sequences:  A278579 A278580 A278581 * A278583 A278584 A278585

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane, Nov 30 2016

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 May 24 20:53 EDT 2019. Contains 323534 sequences. (Running on oeis4.)