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A108719 Primes which can be partitioned into a sum of distinct primes in more than one way. 0
5, 7, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Presumably this consists of all primes except 2, 3 and 11 - see A000586.

Prime p is in the sequence iff A000586(p)>1.

LINKS

Table of n, a(n) for n=1..57.

FORMULA

a(n) = prime(n+3) for n > 2. [Charles R Greathouse IV, Feb 09 2012]

EXAMPLE

5 is a member because 5 can be written in two ways: 5 = 2+3; 19 because 19 = 3+5+11.

PROG

(PARI) a(n)=if(n>2, prime(n+3), 3+2*n) \\ Charles R Greathouse IV, Feb 09 2012

CROSSREFS

Cf. A000586.

Sequence in context: A236204 A152810 A260405 * A162707 A216769 A216743

Adjacent sequences: A108716 A108717 A108718 * A108720 A108721 A108722

KEYWORD

easy,nonn

AUTHOR

Giovanni Teofilatto, Jun 21 2005; corrected Jun 23 2005

EXTENSIONS

Edited and extended by Ray Chandler, Jul 03 2005

STATUS

approved

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Last modified November 30 01:31 EST 2022. Contains 358431 sequences. (Running on oeis4.)