A155480 Composites n with identical largest digits of n and n-th prime.

14, 30, 32, 54, 56, 74, 92, 94, 95, 116, 138, 148, 159, 169, 189, 196, 208, 209, 213, 217, 224, 245, 247, 249, 261, 270, 272, 273, 275, 280, 282, 284, 285, 286, 287, 288, 289, 290, 291, 292, 294, 295, 296, 297, 298, 299, 309, 321, 324, 325, 326, 330, 334, 335

Offset

1,1

Links

Table of n, a(n) for n=1..54.

Example

If n=14=composite and 43=prime(14), then 1<4=4>3 and 14=a(1). If n=30=composite and 113=prime(30), then 0<3=3>1=1 and 30=a(2). If n=32=composite and 131=prime(32), then 2<3=3>1=1 and 32=a(3), etc.

Crossrefs

Cf. A000027, A000040.

Sequence in context: A240823 A226734 A162931 * A230720 A053751 A063311

Adjacent sequences: A155477 A155478 A155479 * A155481 A155482 A155483

Keyword

nonn,base

Author

Juri-Stepan Gerasimov, Jan 23 2009

Extensions

Corrected (190 replaced by 290) by R. J. Mathar, May 10 2010

Status

approved