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A101324 Primes p such that p+1=C(q)=q-th composite and q is prime. 1
7, 13, 19, 29, 43, 53, 61, 107, 113, 181, 193, 229, 251, 317, 337, 383, 433, 463, 491, 601, 827, 857, 887, 997, 1033, 1061, 1163, 1193, 1307, 1373, 1531, 1693, 1699, 1721, 1789, 1811, 1831, 1931, 2003, 2029, 2267, 2339, 2347 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

In general P(k)=k-th prime=k+n where n is the index of the composite P(k)+1 (k>=2)

LINKS

Table of n, a(n) for n=1..43.

EXAMPLE

a(5)=43 because 43+1=44=C(29) and 29 is prime.

CROSSREFS

Cf. A100718.

Sequence in context: A059310 A299929 A287217 * A216830 A167462 A088513

Adjacent sequences:  A101321 A101322 A101323 * A101325 A101326 A101327

KEYWORD

nonn

AUTHOR

Robin Garcia, Dec 24 2004

STATUS

approved

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Last modified August 9 20:09 EDT 2020. Contains 336326 sequences. (Running on oeis4.)