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A256238 Number of primes in A256237 less than 10^n. 4
0, 1, 6, 68, 847, 7963, 81327 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,3

COMMENTS

Up to 10^9, primes congruent to 2 or 3 mod 5 appear in A256237 more often (42358 such primes) than primes congruent to 1 or 4 mod 5 (38969 such primes). Why?

LINKS

Table of n, a(n) for n=3..9.

CROSSREFS

Cf. A254248, A255816, A255971, A256164, A256237.

Sequence in context: A128869 A186669 A258134 * A349557 A140606 A014505

Adjacent sequences:  A256235 A256236 A256237 * A256239 A256240 A256241

KEYWORD

nonn,more

AUTHOR

Arkadiusz Wesolowski, Mar 20 2015

STATUS

approved

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Last modified January 22 01:28 EST 2022. Contains 350481 sequences. (Running on oeis4.)