A126839 Ramanujan numbers (A000594) read mod 11.

1, 9, 10, 2, 1, 2, 9, 0, 9, 9, 1, 9, 4, 4, 10, 7, 9, 4, 0, 2, 2, 9, 10, 0, 7, 3, 5, 7, 0, 2, 7, 8, 10, 4, 9, 7, 3, 0, 7, 0, 3, 7, 5, 2, 9, 2, 8, 4, 8, 8, 2, 8, 5, 1, 1, 0, 0, 0, 5, 9, 1, 8, 4, 3, 4, 2, 4, 7, 1, 4, 8, 0, 4, 5, 4, 0, 9, 8, 1, 7, 1, 5, 5, 4, 9, 1, 0, 0, 4, 4, 3, 9, 4, 6, 0, 3, 4, 6, 9, 3, 2, 7, 6

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

Cf. A000594, this sequence (mod 11^1), A126840 (mod 11^2), A126841 (mod 11^3).

Sequence in context: A262551 A160563 A158286 * A341818 A034058 A347181

Adjacent sequences: A126836 A126837 A126838 * A126840 A126841 A126842

Keyword

nonn

Author

N. J. A. Sloane, Feb 25 2007

Status

approved