The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A361009 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A361009

Positive integers k such that 2*k cannot be expressed p^2-q where p and q are primes.
(history; published version)

#5 by Michael De Vlieger at Tue Feb 28 08:21:01 EST 2023

STATUS

proposed

approved

#4 by Michel Marcus at Tue Feb 28 04:27:09 EST 2023

STATUS

editing

proposed

#3 by Michel Marcus at Tue Feb 28 04:26:18 EST 2023

COMMENTS

Most of the terms are congruent to 1 mod 3, but some terms of A016789 are missing.

A few terms are divisible by 3 (A008585).

CROSSREFS

Cf. A008585, A016789.

Discussion

Tue Feb 28

04:27

Michel Marcus: Inspired by A109619

#2 by Michel Marcus at Tue Feb 28 04:20:38 EST 2023

NAME

allocated for Michel MarcusPositive integers k such that 2*k cannot be expressed p^2-q where p and q are primes.

DATA

5, 8, 14, 17, 20, 26, 29, 32, 35, 38, 41, 44, 47, 50, 53, 56, 62, 65, 68, 71, 72, 74, 77, 80, 86, 89, 92, 95, 98, 101, 104, 107, 110, 113, 116, 119, 122, 125, 128, 131, 134, 137, 140, 146, 149, 152, 155, 158, 161, 164, 167, 170, 173, 176, 182, 185, 188, 191, 194, 197

OFFSET

1,1

CROSSREFS

Cf. A000040, A001248, A109619.

KEYWORD

allocated

nonn

AUTHOR

Michel Marcus, Feb 28 2023

STATUS

approved

editing

Discussion

Tue Feb 28

04:20

Michel Marcus: sorry no program

#1 by Michel Marcus at Tue Feb 28 04:20:38 EST 2023

NAME

allocated for Michel Marcus

KEYWORD

allocated

STATUS

approved