A080334 - OEIS

A080334

n^2 read backwards, for n = 51, 50, 49, ...

1062, 52, 1042, 4032, 9022, 6112, 5202, 6391, 9481, 4671, 1861, 61, 1251, 4441, 9631, 6921, 5221, 6511, 9801, 4201, 169, 9, 148, 487, 927, 676, 526, 675, 925, 484, 144, 4, 163, 423, 982, 652, 522, 691, 961, 441, 121, 1, 18, 46, 94, 63, 52, 61, 9, 4, 1

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OFFSET

51,1

COMMENTS

This sequence breaks all the rules of the database, especially since the terms are in reverse order. It is included only because segments of it are sometimes given as puzzles.

LINKS

Table of n, a(n) for n=51..101.

Index entry for sequences related to reversing digits of squares

FORMULA

Write the squares backwards: 1, 4, 9, 61, 52, 63, 94, 46, 18, 1, 121, 441, 961, 691, ..., then reverse the sequence.

MATHEMATICA

IntegerReverse/@(Range[51, 1, -1]^2) (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jul 25 2019 *)

CROSSREFS

Cf. A002942 (which is the usual version of this sequence), A000290.

Sequence in context: A122712 A172384 A177136 * A224457 A123211 A023078

Adjacent sequences: A080331 A080332 A080333 * A080335 A080336 A080337

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Mar 19 2003

STATUS

approved

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