The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A068134 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A068134

Index of the smallest triangular number with digit sum = n-th triangular number.
(history; published version)

#11 by Michael De Vlieger at Mon Jan 29 17:37:31 EST 2024

STATUS

proposed

approved

#10 by Sean A. Irvine at Mon Jan 29 17:26:51 EST 2024

STATUS

editing

proposed

#9 by Sean A. Irvine at Mon Jan 29 17:26:28 EST 2024

DATA

0, 1, 2, 3, 7, 12, 56, 109, 368, 1332, 5656, 28248, 140547, 774325, 8485151, 34339452, 397492132, 3996973827, 63229707890, 1039037824132

OFFSET

1,2

0,3

EXTENSIONS

a(0)=0 inserted by Sean A. Irvine, Jan 29 2024

STATUS

approved

editing

Discussion

Mon Jan 29

17:26

Sean A. Irvine: For consistency with A068133.

#8 by N. J. A. Sloane at Thu Dec 05 19:55:10 EST 2013

AUTHOR

_Amarnath Murthy (amarnath_murthy(AT)yahoo.com), _, Feb 21 2002

Discussion

Thu Dec 05

19:55

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

#7 by Russ Cox at Fri Mar 30 17:26:44 EDT 2012

EXTENSIONS

a(18), a(19) from _Max Alekseyev (maxale(AT)gmail.com), _, Jun 19 2011

Discussion

Fri Mar 30

17:26

OEIS Server: https://oeis.org/edit/global/140

#6 by Max Alekseyev at Mon Jun 20 02:04:07 EDT 2011

STATUS

proposed

approved

#5 by Max Alekseyev at Mon Jun 20 02:04:01 EDT 2011

DATA

1, 2, 3, 7, 12, 56, 109, 368, 1332, 5656, 28248, 140547, 774325, 8485151, 34339452, 397492132, 3996973827, 63229707890, 1039037824132

EXTENSIONS

a(18) , a(19) from Max Alekseyev (maxale(AT)gmail.com), Jun 19 2011

STATUS

approved

proposed

#4 by Max Alekseyev at Sun Jun 19 09:36:10 EDT 2011

STATUS

proposed

approved

#3 by Max Alekseyev at Sun Jun 19 09:36:04 EDT 2011

DATA

1, 2, 3, 7, 12, 56, 109, 368, 1332, 5656, 28248, 140547, 774325, 8485151, 34339452, 397492132, 3996973827, 63229707890

EXTENSIONS

a(18) from Max Alekseyev (maxale(AT)gmail.com), Jun 19 2011

STATUS

approved

proposed

#2 by N. J. A. Sloane at Sat Sep 13 03:00:00 EDT 2003

NAME

Index of the First Triangular smallest triangular number with first digit sum = n-th triangular number.

KEYWORD

base,more,nonn,new