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!)
A063280 Dimension of the space of weight n cuspidal newforms for Gamma_1( 7 ). 0
-1, 0, 1, 3, 5, 7, 9, 11, 13, 15, 17, 17, 21, 23, 25, 25, 29, 29, 33, 33, 37, 37, 41, 39, 45, 45, 49, 47, 53, 51, 57, 55, 61, 59, 65, 61, 69, 67, 73, 69, 77, 73, 81, 77, 85, 81, 89, 83, 93, 89, 97, 91, 101, 95, 105, 99, 109, 103, 113, 105, 117, 111 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,4
LINKS
William A. Stein, The modular forms database
FORMULA
From Colin Barker, Feb 24 2016: (Start)
a(n) = a(n-4) + a(n-6) - a(n-10) for n>13.
G.f.: -x^2*(1 -x^2 -3*x^3 -6*x^4 -7*x^5 -9*x^6 -8*x^7 -7*x^8 -5*x^9 -2*x^10 +x^11) / ((1 -x)^2*(1 +x)^2*(1 -x +x^2)*(1 +x^2)*(1 +x +x^2)).
(End)
CROSSREFS
Cf. A016813 (bisection)
Sequence in context: A118137 A160931 A160924 * A352874 A249123 A094042
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Jul 14 2001
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 April 20 03:01 EDT 2024. Contains 371798 sequences. (Running on oeis4.)