The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A291982

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A291982

a(n) = Euler(n, n+1) * 2^valuation(n+1, 2), where Euler(n, x) denotes the Euler polynomial.
(history; published version)

#16 by Michael De Vlieger at Fri Jul 08 08:22:55 EDT 2022

STATUS

reviewed

approved

#15 by Michel Marcus at Fri Jul 08 01:18:51 EDT 2022

STATUS

proposed

reviewed

#14 by Chai Wah Wu at Thu Jul 07 18:55:11 EDT 2022

STATUS

editing

proposed

#13 by Chai Wah Wu at Thu Jul 07 18:55:03 EDT 2022

PROG

(Python)

from sympy import euler

def A291982(n): return euler(n, n+1)*(n+1 & -n-1) # Chai Wah Wu, Jul 07 2022

STATUS

approved

editing

#12 by Peter Luschny at Sat Sep 23 03:20:11 EDT 2017

STATUS

reviewed

approved

#11 by Joerg Arndt at Sat Sep 23 03:16:36 EDT 2017

STATUS

proposed

reviewed

#10 by Peter Luschny at Fri Sep 22 16:28:59 EDT 2017

STATUS

editing

proposed

Discussion

Fri Sep 22

16:36

Felix Fröhlich: Yes, a lot. It may be obvious to people more familiar with the subject than me, but I do appreciate the clarification. Thanks.

#9 by Peter Luschny at Fri Sep 22 16:28:43 EDT 2017

NAME

a(n) = Euler(n, n+1) * 2^valuation(n+1, 2), where Euler(n, x) denotes the Euler polynomial.

STATUS

proposed

editing

Discussion

Fri Sep 22

16:28

Peter Luschny: Better?

#8 by Peter Luschny at Fri Sep 22 16:16:22 EDT 2017

STATUS

editing

proposed

Discussion

Fri Sep 22

16:26

Felix Fröhlich: Probably just my lack of knowledge, but what does "Euler" refer to? It is not mentioned at https://oeis.org/wiki/Style_Sheet#Spelling_and_notation. Is it https://oeis.org/wiki/Euler_numbers (which of them)? Or is it something at https://oeis.org/wiki/Index_to_OEIS:_Section_Eu#EulerianN?

#7 by Peter Luschny at Fri Sep 22 16:15:29 EDT 2017

NAME

a(n) = Euler(n, n+1) * 2^valuation(n+1, 2).

STATUS

proposed

editing