A194219 - OEIS

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A194219

Right part of the square of the n-th Kaprekar number.

2

0, 1, 25, 25, 1, 209, 209, 1, 1729, 1984, 4641, 2500, 2500, 5264, 1984, 1729, 1, 14336, 17284, 37444, 17284, 14336, 4641, 1, 122449, 126201, 148761, 152100, 165025, 217124, 221089, 227904, 229449, 237969, 248521, 248900, 250000, 250000, 248900, 248521

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OFFSET

1,3

COMMENTS

A194218(n) + a(n) = A006886(n) and

concatenation of A194218(n) and a(n) = A006886(n)^2.

LINKS

Table of n, a(n) for n=1..40.

Rosetta Code, Kaprekar numbers

Eric Weisstein's World of Mathematics, Kaprekar Number

Wikipedia, Kaprekar number

PROG

(Haskell) See A194218.

CROSSREFS

Sequence in context: A023467 A158501 A330272 * A291434 A291476 A010864

Adjacent sequences: A194216 A194217 A194218 * A194220 A194221 A194222

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Aug 19 2011

STATUS

approved