A095021 - OEIS

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A095021

Number of 5k+1 primes (A030430) in range [2^n,2^(n+1)].

0, 0, 1, 1, 2, 2, 7, 9, 19, 33, 64, 115, 216, 402, 754, 1434, 2669, 5116, 9651, 18382, 35064, 67056, 128394, 246349, 473469, 911468, 1757069, 3389718, 6551877, 12674065, 24546590, 47581820, 92330910, 179317301, 348546007, 678027180, 1319932246, 2571422948

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,5

LINKS

Table of n, a(n) for n=1..38.

Antti Karttunen and John Moyer, C-program for computing the initial terms of this sequence.

Index entries for sequences related to occurrences of various subsets of primes in range ]2^n,2^(n+1)].

CROSSREFS

Cf. A030430, A036378.

Sequence in context: A189040 A267214 A107386 * A347913 A348532 A275282

Adjacent sequences: A095018 A095019 A095020 * A095022 A095023 A095024

KEYWORD

nonn

AUTHOR

Antti Karttunen, Jun 01 2004

EXTENSIONS

a(34)-a(38) from Amiram Eldar, Jun 12 2024

STATUS

approved