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Revision History for A178398 (Underlined text is an addition; strikethrough text is a deletion.)

Showing entries 1-10 | older changes
A178398 a(n) = p(p+1)^2, where p is the n-th prime.
(history; published version)
#15 by Joerg Arndt at Mon Jun 24 11:42:08 EDT 2013
STATUS

proposed

approved

#14 by Michel Marcus at Mon Jun 24 10:23:41 EDT 2013
STATUS

editing

proposed

Discussion
Mon Jun 24 11:42 
Joerg Arndt: Just fine!
#13 by Michel Marcus at Mon Jun 24 10:16:08 EDT 2013
OFFSET

181,1

LINKS

Cf. A000040.

FORMULA

a(n) = A000040(n)*A110833(n) = A000040(n)*A008864(n)^2 = A008864(n)*A036690(n). - Michel Marcus, Jun 24 2013

PROG

(PARI) a(n) = prime(n)*(prime(n)+1)^2 \\ Michel Marcus, Jun 24 2013

STATUS

approved

editing

Discussion
Mon Jun 24 10:23 
Michel Marcus: Offset set to 1 instead of 18.
Removed link that was a crossref.
Added formulae : hope I did not overdo it.
#12 by N. J. A. Sloane at Wed May 01 21:16:02 EDT 2013
EXTENSIONS

Edited by _N. J. A. Sloane, _, Dec 21 2010

Discussion
Wed May 01 21:16 
OEIS Server: https://oeis.org/edit/global/1905
#11 by Russ Cox at Sat Mar 31 10:23:07 EDT 2012
AUTHOR

_Eduard Mayer (eduard.mayer(AT)gmx.de), _, Dec 21 2010

Discussion
Sat Mar 31 10:23 
OEIS Server: https://oeis.org/edit/global/360
#10 by N. J. A. Sloane at Tue Dec 21 23:39:41 EST 2010
STATUS

proposed

approved

#9 by N. J. A. Sloane at Tue Dec 21 23:39:38 EST 2010
NAME

Qbaklichea(n) = p(p+1)^2, where p is the n-th sequenceprime.

DATA

18, 48, 180, 448, 1584, 2548, 5508, 7600, 13248, 26100, 31744, 53428, 72324, 83248, 108288, 154548, 212400, 234484, 309808, 368064, 399748, 505600, 585648, 720900, 931588, 1050804, 1114048, 1248048, 1318900, 1468548, 2080768, 2282544, 2609028, 2724400, 3352500, 3488704, 3919348, 4384048, 4713408, 5237748, 5799600, 5995444, 7041024, 7263748, 7723188, 7960000, 9483184, 11189248, 11800368, 12114100

FORMULA

prim²/(√prim²*(prim+1²))=qs qs(Qbakliche sequenz)

EXAMPLE

For prim= Prime Number = 2 2²/(√2²*3²)=18

EXTENSIONS

Edited by N. J. A. Sloane, Dec 21 2010

#8 by N. J. A. Sloane at Tue Dec 21 23:34:06 EST 2010
NAME

Qbakliche sequenzsequence.

LINKS

http://oeis.org/A000040

Cf. A000040.

#7 by Eduard Mayer at Tue Dec 21 10:51:58 EST 2010
LINKS

http://oeis.org/A000040

#6 by Eduard Mayer at Tue Dec 21 10:47:30 EST 2010
FORMULA

prim²/(√prim²*(prim+1²))=qs qs(Qbakliche sequenz)

EXAMPLE

For prim= Prime Number = 2 2²/(√2²*3²)=18

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Last modified August 29 14:31 EDT 2024. Contains 375517 sequences. (Running on oeis4.)