The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A092342 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A092342

a(n) = sigma_3(3n+1).
(history; published version)

#15 by Joerg Arndt at Tue Dec 12 08:00:54 EST 2023

STATUS

reviewed

approved

#14 by Michel Marcus at Tue Dec 12 02:30:24 EST 2023

STATUS

proposed

reviewed

#13 by Amiram Eldar at Tue Dec 12 02:21:52 EST 2023

STATUS

editing

proposed

#12 by Amiram Eldar at Tue Dec 12 01:41:45 EST 2023

CROSSREFS

Cf. A000731, A013662, A033690, A045823, A091986, A092341, A092343.

#11 by Amiram Eldar at Tue Dec 12 01:41:17 EST 2023

FORMULA

Sum_{k=10..n} a(k) ~ (20*zeta(4)/3) * n^4. - Amiram Eldar, Dec 12 2023

#10 by Amiram Eldar at Tue Dec 12 01:41:02 EST 2023

FORMULA

Sum_{k=1..n} a(k) ~ (20*zeta(4)/3) * n^4. - Amiram Eldar, Dec 12 2023

CROSSREFS

Trisection of A001158. Cf. A045823, A091986, A092341, A092343.

Cf. A013662, A045823, A091986, A092341, A092343.

KEYWORD

nonn,easy

STATUS

approved

editing

#9 by Harvey P. Dale at Mon Apr 22 10:20:37 EDT 2019

STATUS

editing

approved

#8 by Harvey P. Dale at Mon Apr 22 10:20:34 EDT 2019

MATHEMATICA

DivisorSigma[3, 3*Range[0, 40]+1] (* Harvey P. Dale, Apr 22 2019 *)

STATUS

approved

editing

#7 by Michel Marcus at Sat May 17 17:31:45 EDT 2014

STATUS

proposed

approved

#6 by Jon E. Schoenfield at Sat May 17 17:15:58 EDT 2014

STATUS

editing

proposed