A226840 Least prime in a string of exactly n consecutive primes all differing by a square.

3, 2, 9547, 255763, 9148351, 189637381, 78793186597, 1312901933341

Offset

1,1

Comments

a(9) > 10^14.

Links

Table of n, a(n) for n=1..8.

Example

The 7 gaps following a(8) = 1312901933341 are the squares 36, 144, 36, 36, 4, 36, 36.

Crossrefs

Cf. A220697, A226768, A226769.

Sequence in context: A139737 A354386 A036113 * A334885 A318330 A199261

Adjacent sequences: A226837 A226838 A226839 * A226841 A226842 A226843

Keyword

nonn

Author

Giovanni Resta, Jun 19 2013

Status

approved