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A077731 Smallest square beginning with the reverse concatenation of first n natural numbers. 1
1, 2116, 321489, 43217476, 543216249, 65432105209, 76543216214404, 87654321389325625, 9876543214442601636, 109876543213216782564, 11109876543211013634144016, 12111098765432180129777502784 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..12.

CROSSREFS

Cf. A077732.

Sequence in context: A217439 A067632 A236446 * A077733 A324170 A324324

Adjacent sequences:  A077728 A077729 A077730 * A077732 A077733 A077734

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Nov 19 2002

EXTENSIONS

Corrected and extended by Sascha Kurz, Jan 04 2003

STATUS

approved

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Last modified May 24 21:08 EDT 2022. Contains 354043 sequences. (Running on oeis4.)