A173250 Positive odd nonprimes of the form prime-10.

1, 9, 21, 27, 33, 49, 51, 57, 63, 69, 87, 91, 93, 99, 117, 121, 129, 141, 147, 153, 169, 171, 183, 187, 189, 201, 213, 217, 219, 231, 247, 253, 259, 261, 267, 273, 297, 301, 303, 321, 327, 339, 343, 357, 363, 369, 387, 391, 399, 411, 423, 429, 447, 451, 453

Offset

1,2

Links

Table of n, a(n) for n=1..55.

Example

a(1)=1 because 11(prime)-10=1(positive odd nonprime); a(2)=9 because 19(prime)-10=9(positive odd nonprime).

Crossrefs

Cf. A000040, A141468, A164384.

Sequence in context: A192192 A053795 A100490 * A128462 A186815 A106214

Adjacent sequences: A173247 A173248 A173249 * A173251 A173252 A173253

Keyword

nonn

Author

Juri-Stepan Gerasimov, Feb 14 2010

Extensions

343 inserted by R. J. Mathar, Feb 21 2010

Status

approved