A256238 Number of primes in A256237 less than 10^n.

0, 1, 6, 68, 847, 7963, 81327

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 * A359714 A370938 A349557

Adjacent sequences: A256235 A256236 A256237 * A256239 A256240 A256241

Keyword

nonn,more

Author

Arkadiusz Wesolowski, Mar 20 2015

Status

approved