The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A056109 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A056109

Fifth spoke of a hexagonal spiral.
(history; published version)

#96 by Michel Marcus at Mon Jun 26 13:12:49 EDT 2023

PROG

(Python) for n in range(0, 100): print(int(3*n**2 + 2*n + 1), end=' , ') # Stefano Spezia, Oct 16 2018

STATUS

proposed

editing

#95 by Kevin Ryde at Mon Jun 26 10:20:12 EDT 2023

STATUS

editing

proposed

#94 by Kevin Ryde at Mon Jun 26 10:19:07 EDT 2023

PROG

(Python) for n in range(0, 100): print(int(3*n**2 + 2*n + 1), end=' ') # Stefano Spezia, 16 Oct 16 2018

Discussion

Mon Jun 26

10:20

Kevin Ryde: Restore Stefano's code.

#93 by Kevin Ryde at Mon Jun 26 10:18:20 EDT 2023

PROG

(Python) print([3*n**2+2*n+1 for n in range(0, 100)]: print(int(3*n**2 + 2*n + 1), end=' ') # Stefano Spezia, 16 Oct 16 2018

STATUS

proposed

editing

#92 by Nathan L. Skirrow at Mon Jun 26 10:05:47 EDT 2023

STATUS

editing

proposed

#91 by Nathan L. Skirrow at Mon Jun 26 10:04:33 EDT 2023

PROG

(Python) print([3*n**2+2*n+1 for n in range(0, 100): print(int(3*n**2 + 2*n + 1), end=' ']) # Stefano Spezia, Oct 16 2018

STATUS

proposed

editing

Discussion

Mon Jun 26

10:05

Nathan L. Skirrow: Python program had extraneous int() when int.__pow__ returns ints already

#90 by Michel Marcus at Tue May 30 02:07:55 EDT 2023

STATUS

editing

proposed

Discussion

Tue May 30

03:32

Joerg Arndt: your "Diamond" are in fact squares drawn in a non-squary way

#89 by Michel Marcus at Tue May 30 02:07:51 EDT 2023

LINKS

H. Henry Bottomley, <a href="/A003215/a003215.gif">Illustration of initial terms</a>

STATUS

proposed

editing

#88 by Leo Tavares at Mon May 29 19:15:18 EDT 2023

STATUS

editing

proposed

#87 by Leo Tavares at Mon May 29 19:14:52 EDT 2023

LINKS

<a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (3,-3,1).