The On-Line Encyclopedia of Integer Sequences® (OEIS®)

Revision History for A068866 (Underlined text is an addition; strikethrough text is a ~~deletion~~.)
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A068866

Triangular numbers k*(k+1)/2 such that A068865(k) = k*(k+1)/2.
(history; published version)

#7 by Michel Marcus at Tue Mar 19 03:32:36 EDT 2024

STATUS

reviewed

approved

#6 by Joerg Arndt at Tue Mar 19 03:22:48 EDT 2024

STATUS

proposed

reviewed

#5 by Sean A. Irvine at Mon Mar 18 23:37:55 EDT 2024

STATUS

editing

proposed

#4 by Sean A. Irvine at Mon Mar 18 23:37:45 EDT 2024

	NAME	`NumbersTriangular numbers nk(k+1)/2 such that A068865(nk) = nk(k+1)/2.`
	DATA	`1, 3, 6, 10, 28, 36, 45, 78, 91, 105, 136, 406, 465, 561, 666, 703, 946, 1081, 3240, 6555, 7260, 9045, 32640, 46971, 47586, 48828, 51360, 70876, 72390, 94395, 319600, 719400, 903840, 914628, 4862521, 5092836, 5112003, 5131206, 6898755, 7108335, 9122856`
	EXTENSIONS	`Missing 36 inserted and more terms from Sean A. Irvine, Mar 18 2024`
	STATUS	`approved` `editing`

#3 by N. J. A. Sloane at Thu Dec 05 19:55:14 EST 2013

AUTHOR

_Amarnath Murthy (amarnath_murthy(AT)yahoo.com), _, Mar 13 2002

Discussion
Thu Dec 05	19:55	OEIS Server: https://oeis.org/edit/global/2075

#2 by N. J. A. Sloane at Sat Jun 12 03:00:00 EDT 2004

	NAME	`Numbers n such that A068865(n) = n.`
	KEYWORD	`base,nonn,new`

#1 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

	NAME	`n such that A068865(n) = n.`
	DATA	`1, 3, 6, 10, 28, 45, 78, 91, 105, 136`
	OFFSET	`1,2`
	CROSSREFS	`Cf. A068855, A068865.`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 13 2002`
	STATUS	`approved`

Last modified August 31 15:16 EDT 2024. Contains 375572 sequences. (Running on oeis4.)