The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A046022 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A046022

Primes together with 1 and 4.
(history; published version)

#83 by Michael De Vlieger at Thu Oct 17 14:46:25 EDT 2024

STATUS

reviewed

approved

#82 by Stefano Spezia at Thu Oct 17 14:36:22 EDT 2024

STATUS

proposed

reviewed

#81 by Michel Marcus at Thu Oct 17 13:15:16 EDT 2024

STATUS

editing

proposed

#80 by Michel Marcus at Thu Oct 17 13:15:11 EDT 2024

COMMENTS

A141295(a(n)) = a(n). - Reinhard Zumkeller, Jun 23 2008

A018194(a(n)) = 1. - Reinhard Zumkeller, Mar 09 2012

A240471(a(n)) = 1. - Reinhard Zumkeller, Apr 06 2014

FORMULA

A141295(a(n)) = a(n). - Reinhard Zumkeller, Jun 23 2008

A018194(a(n)) = 1. - Reinhard Zumkeller, Mar 09 2012

A240471(a(n)) = 1. - Reinhard Zumkeller, Apr 06 2014

STATUS

proposed

editing

#79 by Chai Wah Wu at Thu Oct 17 12:23:22 EDT 2024

STATUS

editing

proposed

#78 by Chai Wah Wu at Thu Oct 17 12:23:09 EDT 2024

PROG

(Python)

from sympy import prime

def A046022(n): return prime(n-2) if n>4 else n # Chai Wah Wu, Oct 17 2024

STATUS

approved

editing

#77 by Alois P. Heinz at Sat Aug 31 10:49:11 EDT 2024

STATUS

editing

approved

#76 by Alois P. Heinz at Sat Aug 31 10:49:04 EDT 2024

DATA

1, 2, 3, 4, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269

STATUS

approved

editing

#75 by N. J. A. Sloane at Sun Dec 12 19:42:45 EST 2021

STATUS

proposed

approved

#74 by Jon E. Schoenfield at Sun Dec 12 13:44:24 EST 2021

STATUS

editing

proposed