A194219 Right part of the square of the n-th Kaprekar number.

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

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