A118748 a(n) = Product_{k=1..n} P(k), where P(k) is the smallest prime >= 2*k.

2, 10, 70, 770, 8470, 110110, 1871870, 31821790, 604614010, 13906122230, 319840811290, 9275383527410, 268986122294890, 7800597546551810, 241818523943106110, 8947285385894926070, 331049559278112264590

Offset

1,1

Links

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

Crossrefs

Cf. A118455, A118456, A118747.

Sequence in context: A320957 A341477 A317980 * A118752 A362821 A060842

Adjacent sequences: A118745 A118746 A118747 * A118749 A118750 A118751

Keyword

easy,nonn

Author

Jonathan Vos Post, Apr 29 2006

Status

approved