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A070044 n for which ceiling(n^1.5) is prime. 1
2, 7, 8, 11, 13, 14, 15, 17, 19, 21, 28, 29, 31, 34, 41, 54, 57, 71, 82, 83, 92, 96, 98, 102, 104, 108, 124, 130, 140, 142, 145, 147, 148, 156, 158, 171, 206, 213, 223, 231, 233, 240, 252, 254, 255, 261, 262, 266, 267, 275, 284, 297, 299, 300, 315, 322, 343, 354 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..57.

EXAMPLE

ceiling(2^1.5)=3, so 2 is in the sequence. ceiling(3^1.5)=6, so 3 is not in the sequence.

MATHEMATICA

Select[Range[400], PrimeQ[Ceiling[ #^(3/2)]]&]

PROG

(PARI) for (n=1, 1000, if (isprime(ceil(n^1.5)), write("primes15n.txt", n)))

CROSSREFS

The corresponding primes are in A070045.

Sequence in context: A005538 A206331 A053013 * A129850 A037073 A047239

Adjacent sequences:  A070041 A070042 A070043 * A070045 A070046 A070047

KEYWORD

nonn

AUTHOR

Jon Perry, May 03 2002

EXTENSIONS

Edited by Dean Hickerson, May 07 2002

STATUS

approved

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Last modified May 26 23:51 EDT 2019. Contains 323597 sequences. (Running on oeis4.)