A048190 Let (u1,u2) be successive untouchable numbers such that phi(u1) = phi(u2); sequence gives values of u2.

120, 304, 624, 628, 738, 1192, 1348, 1528, 1956, 2212, 3208, 3276, 3476, 3708, 3748, 4336, 5876, 5952, 6282, 6402, 6632, 7468, 7528, 7944, 7976, 8488, 8552, 8688, 12762, 12872, 13972, 15348, 15536, 15858, 15868, 17556, 17944, 18008, 18552, 19520, 20464, 22734

Offset: 1

Author

Naohiro Nomoto

Keywords

• nonn

Examples

			120 is a term since 96 and 120 are successive untouchable numbers and phi(96) = phi(120).
304 is a term since 292 and 304 are successive untouchable numbers and phi(292) = phi(304).
		

Links

• Amiram Eldar, Table of n, a(n) for n = 1..4309 (terms 1..81 from Michel Marcus)

Crossrefs

Cf. A000010, A005114, A048188, A048189, A048191.

Extensions

Offset changed to 1 and more terms from Michel Marcus, Jun 08 2015