A126844 Ramanujan numbers (A000594) read mod 13^3.

1, 2173, 252, 725, 436, 543, 832, 994, 601, 521, 741, 349, 73, 2002, 22, 683, 1434, 955, 1576, 1929, 949, 1989, 1727, 30, 1354, 445, 1855, 1222, 768, 1669, 1273, 2091, 2184, 736, 247, 719, 1472, 1722, 820, 575, 2177, 1391, 2104, 1157, 593, 295, 66, 750, 1987

Offset

1,2

Links

Amiram Eldar, 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.

Mathematica

a[n_] := Mod[RamanujanTau[n], 2197]; Array[a, 100] (* Amiram Eldar, Jan 05 2025 *)

Prog

(PARI) a(n) = ramanujantau(n) % 2197; \\ Amiram Eldar, Jan 05 2025

Crossrefs

Cf. A000594, A126842 (mod 13^1), A126843 (mod 13^2), this sequence (mod 13^3).

Sequence in context: A151771 A251955 A251951 * A235861 A184380 A252238

Adjacent sequences: A126841 A126842 A126843 * A126845 A126846 A126847

Keyword

nonn

Author

N. J. A. Sloane, Feb 25 2007

Status

approved