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

1,1

Links

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

Example

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).

Crossrefs

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

Sequence in context: A076579 A345350 A121898 * A090391 A275083 A098114

Adjacent sequences: A048187 A048188 A048189 * A048191 A048192 A048193

Keyword

nonn

Author

Naohiro Nomoto

Extensions

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

Status

approved