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Revision History for A236248 (Underlined text is an addition; strikethrough text is a deletion.)

Showing entries 1-10 | older changes
A236248 Numbers m with C(2*m, m) - prime(m) prime, where C(2*m, m) = (2*m)!/(m!)^2.
(history; published version)
#27 by OEIS Server at Wed Jan 22 09:00:04 EST 2014
LINKS

Zhi-Wei Sun, <a href="/A236248/b236248_3.txt">Table of n, a(n) for n = 1..36</a>

#26 by Bruno Berselli at Wed Jan 22 09:00:04 EST 2014
STATUS

proposed

approved

Discussion
Wed Jan 22 09:00
OEIS Server: Installed new b-file as b236248.txt.  Old b-file is now b236248_3.txt.
#25 by Zhi-Wei Sun at Wed Jan 22 06:44:33 EST 2014
STATUS

editing

proposed

#24 by Zhi-Wei Sun at Wed Jan 22 06:43:57 EST 2014
DATA

2, 5, 6, 10, 29, 132, 266, 322, 350, 538, 667, 693, 776, 977, 1336, 1810, 1908, 1980, 2175, 2616, 2716, 3211, 3473, 5223, 5630, 5758, 6585, 6979, 7964, 8469, 9052, 9758, 10324, 16876, 25760, 28171

COMMENTS

The prime C(2*a(3536), a(3536)) - prime(a(3536)) = C(5152056342, 2576028171) - prime(2576028171) has 1550716959 decimal digits.

LINKS

Zhi-Wei Sun, <a href="/A236248/b236248_3.txt">Table of n, a(n) for n = 1..3536</a>

STATUS

approved

editing

#23 by OEIS Server at Wed Jan 22 04:00:10 EST 2014
LINKS

Zhi-Wei Sun, <a href="/A236248/b236248_2.txt">Table of n, a(n) for n = 1..35</a>

#22 by Bruno Berselli at Wed Jan 22 04:00:10 EST 2014
STATUS

proposed

approved

Discussion
Wed Jan 22 04:00
OEIS Server: Installed new b-file as b236248.txt.  Old b-file is now b236248_2.txt.
#21 by Zhi-Wei Sun at Tue Jan 21 22:26:00 EST 2014
STATUS

editing

proposed

#20 by Zhi-Wei Sun at Tue Jan 21 22:25:47 EST 2014
DATA

2, 5, 6, 10, 29, 132, 266, 322, 350, 538, 667, 693, 776, 977, 1336, 1810, 1908, 1980, 2175, 2616, 2716, 3211, 3473, 5223, 5630, 5758, 6585, 6979, 7964, 8469, 9052, 9758, 10324, 16876, 25760

STATUS

proposed

editing

#19 by Zhi-Wei Sun at Tue Jan 21 22:25:03 EST 2014
STATUS

editing

proposed

#18 by Zhi-Wei Sun at Tue Jan 21 22:24:23 EST 2014
COMMENTS

The prime C(2*a(3435), a(3435)) - prime(a(3435)) = C(3375251520, 1687625760) - prime(1687625760) has 1015915507 decimal digits.

LINKS

Zhi-Wei Sun, <a href="/A236248/b236248_2.txt">Table of n, a(n) for n = 1..3435</a>

STATUS

approved

editing

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Last modified August 31 11:13 EDT 2024. Contains 375560 sequences. (Running on oeis4.)