A103511 Smallest prime > double factorial number A001147(n).

2, 5, 17, 107, 947, 10399, 135151, 2027033, 34459429, 654729139, 13749310577, 316234143227, 7905853580633, 213458046676877, 6190283353629379, 191898783962510743, 6332659870762850657, 221643095476699771957, 8200794532637891559553, 319830986772877770815629

Offset

1,1

Links

Table of n, a(n) for n=1..20.

Example

1!!=1, 2 is the first prime greater than 1;
6!!=10395, 10399 is the first prime greater than 10395.

Mathematica

Table[NextPrime[(2n-1)!!], {n, 20}] (* James C. McMahon, Jan 21 2024 *)

Crossrefs

Cf. A001147.

Sequence in context: A203006 A143878 A081546 * A254132 A161609 A228238

Adjacent sequences: A103508 A103509 A103510 * A103512 A103513 A103514

Keyword

nonn

Author

Lei Zhou, Feb 15 2005

Extensions

a(19)-a(20) from James C. McMahon, Jan 21 2024

Status

approved