A103146 - OEIS

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A103146

Primes that can be represented in the form | 2^m +/- 3^n |.

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 59, 61, 67, 73, 79, 83, 89, 97, 101, 113, 127, 131, 137, 139, 179, 211, 227, 229, 239, 241, 251, 257, 269, 283, 307, 337

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..41.

EXAMPLE

2 = 2^0 + 3^0;

47 = 2^7 - 3^4;

53 cannot be written as |2^m+/-3^n| up to m = 30 and n = 19.

CROSSREFS

Cf. A004051. Complement of A007644.

Sequence in context: A167773 A049545 A127566 * A329191 A154363 A049555

Adjacent sequences: A103143 A103144 A103145 * A103147 A103148 A103149

KEYWORD

nonn

AUTHOR

Lei Zhou, Jan 26 2005

EXTENSIONS

Edited and extended by Robert G. Wilson v, Jan 26 2005

STATUS

approved