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A126831
Ramanujan numbers (A000594) read mod 2187.
0
1, 2163, 252, 715, 456, 513, 752, 1374, 81, 2178, 984, 846, 1817, 1635, 1188, 799, 612, 243, 1982, 177, 1422, 441, 1284, 702, 1195, 132, 729, 1865, 1299, 2106, 1313, 1224, 837, 621, 1740, 1053, 965, 546, 801, 1062, 573, 864, 689, 1533, 1944, 1989, 75, 144, 264, 1938
OFFSET
1,2
REFERENCES
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.
MATHEMATICA
Mod[RamanujanTau[Range[50]], 2187] (* Harvey P. Dale, Jan 15 2022 *)
CROSSREFS
Cf. A000594.
Sequence in context: A116074 A252563 A035872 * A161998 A020421 A203736
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 25 2007
STATUS
approved