The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A068855 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A068855

a(1) = 1; a(n) is the smallest triangular number > a(n-1) which differs from it at every digit.
(history; published version)

#12 by Michel Marcus at Wed Dec 01 05:33:50 EST 2021

CROSSREFS

Cf. A000217, A068853, A068854, A068865.

STATUS

approved

editing

Discussion

Wed Dec 01

05:33

Michel Marcus: self-ref

#11 by Michel Marcus at Wed Dec 01 05:33:37 EST 2021

STATUS

reviewed

approved

#10 by Joerg Arndt at Wed Dec 01 05:18:35 EST 2021

STATUS

proposed

reviewed

#9 by Michel Marcus at Wed Dec 01 01:31:17 EST 2021

STATUS

editing

proposed

#8 by Michel Marcus at Wed Dec 01 01:31:14 EST 2021

CROSSREFS

Cf. A000217, A068853, A068854, A068865.

STATUS

proposed

editing

#7 by Jon E. Schoenfield at Tue Nov 30 22:10:53 EST 2021

STATUS

editing

proposed

#6 by Jon E. Schoenfield at Tue Nov 30 22:10:49 EST 2021

NAME

a(1) = 1; a(n) is the smallest triangular number > a(n-1) which differs from it at every digit.

STATUS

approved

editing

Discussion

Tue Nov 30

22:10

Jon E. Schoenfield: right?

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

AUTHOR

_Amarnath Murthy (amarnath_murthy(AT)yahoo.com), _, Mar 12 2002

Discussion

Thu Dec 05

19:55

OEIS Server: https://oeis.org/edit/global/2075

#4 by Russ Cox at Sat Mar 31 10:22:55 EDT 2012

EXTENSIONS

Corrected and extended by _Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), _, Feb 02 2003

Discussion

Sat Mar 31

10:22

OEIS Server: https://oeis.org/edit/global/354

#3 by N. J. A. Sloane at Wed Sep 22 03:00:00 EDT 2004

KEYWORD

base,nonn,new

EXTENSIONS

Corrected and extended by Sascha Kurz (sascha.kurz(AT)stud.uni-bayreuth.de), Feb 02 2003