A122763 A093364 with duplicates removed.

0, 1, 2, 6, 30, 150, 210, 13860, 60060, 420420, 4144140, 9699690, 87297210, 717777060, 4180566390, 18846497670, 26004868890

Offset

1,3

Links

Table of n, a(n) for n=1..17.

Example

Succeedingly longer arithmetic progressions of primes where the end value is smallest (A005115) start 2,2+j,3+2j,5+6j,5+6j,7+30j,7+150j... This sequence collects the unique values of the common differences.

Crossrefs

Cf. A093364, A005115.

Sequence in context: A120950 A055695 A113593 * A166078 A319365 A306946

Adjacent sequences: A122760 A122761 A122762 * A122764 A122765 A122766

Keyword

nonn,hard,more

Author

Roger L. Bagula, Sep 22 2006

Extensions

Edited by Ralf Stephan, May 22 2014

Status

approved