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A105460 The 2^n-th irregular prime. 2
37, 59, 101, 157, 311, 557, 971, 2111, 4909, 10457, 23099, 50359, 109589, 235577, 506281, 1065013, 2249609, 4745963, 10010479 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..19.

MATHEMATICA

ip={ the list of irregular primes to 12 million }; Table[ ip[[2^n]], {n, 0, 18}]

CROSSREFS

Cf. A033844, A105456, A105465.

Sequence in context: A000928 A073276 A281290 * A141851 A105461 A288617

Adjacent sequences:  A105457 A105458 A105459 * A105461 A105462 A105463

KEYWORD

hard,nonn

AUTHOR

Robert G. Wilson v, Apr 07 2005

STATUS

approved

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Last modified February 22 19:30 EST 2018. Contains 299469 sequences. (Running on oeis4.)