OFFSET
1,2
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..10000
H. P. F. Swinnerton-Dyer, On l-adic representations and congruences for coefficients of modular forms, pp. 1-55 of Modular Functions of One Variable III (Antwerp 1972), Lect. Notes Math., 350, 1973.
FORMULA
a(n) = A006571(n) (mod 11), n >= 1. For a proof see the Cowles link under A006571. See also the R. J. Mathar formula there. - Wolfdieter Lang, Feb 16 2016
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 25 2007
STATUS
approved