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A054997 Integers that can be expressed as the sum of consecutive primes in exactly 2 ways. 2
5, 17, 23, 31, 36, 53, 59, 60, 67, 71, 72, 90, 97, 100, 101, 109, 112, 119, 120, 127, 131, 138, 139, 143, 152, 173, 180, 181, 187, 204, 210, 211, 221, 228, 233, 258, 263, 269, 271, 276, 300, 304, 323, 330, 331, 349, 353, 372, 373, 379, 384, 390, 395, 408 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

R. K. Guy, Unsolved Problems in Number Theory, section C2.

LINKS

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

C. Rivera, Problem with some terms

EXAMPLE

5 can be expressed as 5 or 2+3, so 5 is in the sequence.

CROSSREFS

Cf. A054845, A054859, A054996-A055001.

Sequence in context: A226671 A226674 A309770 * A067377 A153504 A044438

Adjacent sequences:  A054994 A054995 A054996 * A054998 A054999 A055000

KEYWORD

nonn

AUTHOR

Jud McCranie, May 30 2000

STATUS

approved

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Last modified April 9 10:32 EDT 2020. Contains 333348 sequences. (Running on oeis4.)