A106849 Values of n for which A106848(n) = n-1.

2, 17, 19, 23, 29, 47, 59, 61, 97, 109, 113, 131, 149, 167, 179, 181, 193, 223, 229, 233, 257, 263, 269, 313, 337, 367, 379, 383, 389, 419, 433, 461, 487, 491, 499, 503, 509, 541, 571, 577, 593, 619, 647, 659, 701, 709, 727, 743, 811, 821, 823, 857, 863, 887

Offset: 1

Author

Chuck Seggelin (seqfan(AT)plastereddragon.com), May 08 2005

Keywords

• base
• nonn

Examples

			a(2) = 17 because A106848(17) = 16.
		

Crossrefs

Cf. A106848.