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A108222 Primes p such that ceiling(sqrt(p)) = prime. 1
2, 3, 5, 7, 17, 19, 23, 37, 41, 43, 47, 101, 103, 107, 109, 113, 149, 151, 157, 163, 167, 257, 263, 269, 271, 277, 281, 283, 331, 337, 347, 349, 353, 359, 487, 491, 499, 503, 509, 521, 523, 787, 797, 809, 811, 821, 823, 827, 829, 839, 907, 911, 919, 929, 937 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MATHEMATICA

Select[Prime /@ Range[200], PrimeQ[Ceiling[Sqrt[ # ]]] &] (* Ray Chandler, Jul 03 2005 *)

CROSSREFS

Cf. A108221.

Sequence in context: A155471 A158015 A042995 * A090725 A276141 A214588

Adjacent sequences:  A108219 A108220 A108221 * A108223 A108224 A108225

KEYWORD

easy,nonn

AUTHOR

Giovanni Teofilatto, Jun 16 2005

EXTENSIONS

Corrected and extended by Ray Chandler, Jul 03 2005

STATUS

approved

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Last modified January 18 07:55 EST 2022. Contains 350454 sequences. (Running on oeis4.)