A281246 Least positive odd number m such that numerator of zeta(-m) are divisible by A000928(n).

31, 43, 57, 67, 23, 21, 129, 61, 83, 163, 99, 83, 19, 155, 87, 291, 279, 185, 99, 199, 381, 125, 239, 365, 195, 129, 93, 291, 399, 85, 269, 221, 51, 89, 21, 591, 521, 19, 427, 79, 235, 47, 223, 407, 627, 31, 11, 377, 289, 513, 259, 731, 219, 329, 543, 743, 101

Offset: 1

Author

Seiichi Manyama, Jan 18 2017

Keywords

• nonn

Examples

			zeta(-11) = 691/32760 and 691 are divisible by A000928(47). So a(47) = 11.
		

Links

• Seiichi Manyama, Table of n, a(n) for n = 1..150
• Wikipedia, Herbrand-Ribet theorem

Crossrefs

Cf. A000928, A001067.