The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A136684 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A136684

Numbers k such that A120296(k) is prime.
(history; published version)

#14 by Alois P. Heinz at Sun Jun 06 20:40:02 EDT 2021

STATUS

proposed

approved

#13 by Jon E. Schoenfield at Sun Jun 06 20:26:03 EDT 2021

STATUS

editing

proposed

#12 by Michel Marcus at Sun Jun 06 12:54:55 EDT 2021

KEYWORD

more,nonn,more,changed

STATUS

proposed

editing

#11 by Jon E. Schoenfield at Sun Jun 06 12:50:31 EDT 2021

STATUS

editing

proposed

#10 by Jon E. Schoenfield at Sun Jun 06 12:50:29 EDT 2021

NAME

Numbers n k such that A120296(nk) is prime.

COMMENTS

A120296 (k) = Numerator of Sum (-_{j=1)^(..k+} (-1)*^(j+1)/kj^4, k = 1..n.

CROSSREFS

Cf. A058313, A119682, A136675, A120296, A136676, A136677. Cf. A001008, A007406, A007408, A007410, A099828, A103345. Cf. A136681, A136682, A136683, A136685, A136686.

Cf. A001008, A007406, A007408, A007410, A099828, A103345.

Cf. A136681, A136682, A136683, A136685, A136686.

STATUS

approved

editing

#9 by Susanna Cuyler at Tue Apr 23 23:53:47 EDT 2019

STATUS

proposed

approved

#8 by Michel Marcus at Tue Apr 23 17:09:59 EDT 2019

STATUS

editing

proposed

#7 by Michel Marcus at Tue Apr 23 17:09:56 EDT 2019

LINKS

Eric Weisstein, The 's World of Mathematics: , <a href="http://mathworld.wolfram.com/HarmonicNumber.html">Harmonic Number</a>

STATUS

proposed

editing

#6 by Robert Price at Tue Apr 23 16:13:05 EDT 2019

STATUS

editing

proposed

#5 by Robert Price at Tue Apr 23 16:12:45 EDT 2019

DATA

3, 5, 8, 11, 20, 38, 61, 65, 71, 80, 83, 93, 233, 704, 1649, 2909, 3417, 3634, 9371

EXTENSIONS

a(15)-a(19) from Robert Price, Apr 23 2019

STATUS

approved

editing