A177911 Numbers k such that k^3 divides 11^(k^2) - 1.

1, 2, 4, 5, 6, 10, 12, 20, 30, 42, 60, 68, 78, 84, 114, 122, 156, 204, 210, 222, 228, 244, 340, 366, 390, 420, 444, 546, 570, 610, 732, 780, 798, 820, 876, 930, 1010, 1020, 1092, 1110, 1140, 1164, 1218, 1220, 1428, 1482, 1554, 1596, 1806, 1830, 1860, 2020, 2220

Offset: 1

Author

Alexander Adamchuk, May 14 2010

Keywords

• nonn

Links

• Robert Price, Table of n, a(n) for n = 1..1634

Crossrefs

Cf. A068383 (k divides 11^k-1), A127092 (k^2 divides 11^k-1).

Cf. A129211, A129212, A177905, A127106, A177907, A127102, A177909, A177243.

Cf. A177911, A177912, A177913, A177914, A177915, A177916, A177917, A177918, A177919, A177920.

Programs

Mathematica

Join[{1},Select[Range[2300],PowerMod[11,#^2,#^3]==1&]] (* Harvey P. Dale, Aug 24 2024 *)