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A077432 Squares of the form u'v'w, where in decimal representation u=n^2, v=2*n^2 and w=n^2 possibly with a leading zero. 3
121, 484, 91809, 163216, 255025, 367236, 499849, 64128064, 81162081, 100200100, 121242121, 144288144, 169338169, 196392196, 225450225, 256512256, 289578289, 324648324, 361722361, 400800400, 441882441, 484968484, 52910580529 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
a(n) = A077431(n)^2.
LINKS
FORMULA
a(n) = (n*(1 + 10^(1 + floor(log_10(2*n^2)))))^2.
EXAMPLE
n=42, n^2=1764 and 2*n^2=3528: a(42) = 1764'3528'1764 = 420042^2 = A077431(42)^2.
CROSSREFS
Sequence in context: A017390 A110722 A236181 * A017654 A183448 A296127
KEYWORD
nonn,base,nice
AUTHOR
Reinhard Zumkeller, Nov 05 2002
STATUS
approved

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Last modified February 27 13:58 EST 2024. Contains 370375 sequences. (Running on oeis4.)