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A141088 a(n) = prime(2^n) - 2*n. 0
1, 3, 13, 45, 121, 299, 705, 1603, 3653, 8141, 17841, 38849, 83991, 180475, 386063, 821609, 1742503, 3681095, 7754039, 16290007, 34135987, 71378525, 148948093, 310248193, 645155147, 1339484145, 2777105075, 5750078991, 11891268343, 24563311249, 50685770105 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..31.

FORMULA

a(n) = A033844(n) - A005843(n).

EXAMPLE

a(1) = prime(2^1) - 2*1 = prime(2) - 2 = 3 - 2 = 1;

a(4) = prime(2^4) - 2*4 = prime(16) - 8 = 53 - 8 = 45.

MAPLE

seq(ithprime(2^n)-2*n, n=1..24); # Emeric Deutsch, Aug 27 2008

MATHEMATICA

Table[Prime[2^n]-2n, {n, 30}] (* Harvey P. Dale, Oct 11 2014 *)

PROG

(PARI) a(n) = prime(2^n) - 2*n; \\ Michel Marcus, Mar 25 2019

CROSSREFS

Cf. A033844, A005843.

Sequence in context: A136520 A212416 A058934 * A187915 A115128 A140420

Adjacent sequences:  A141085 A141086 A141087 * A141089 A141090 A141091

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov Jul 31 2008

EXTENSIONS

Corrected and extended by Emeric Deutsch, Aug 27 2008

More terms from Harvey P. Dale, Oct 11 2014

STATUS

approved

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Last modified August 15 12:33 EDT 2020. Contains 336499 sequences. (Running on oeis4.)