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A115689 Powerful(1) numbers (A001694) whose digit reversal is a square. 2
1, 4, 9, 100, 121, 144, 169, 400, 441, 484, 675, 676, 900, 961, 1000, 1089, 1800, 4000, 9000, 9801, 10000, 10201, 10404, 10609, 12100, 12321, 12544, 12769, 14400, 14641, 14884, 16900, 18000, 18252, 40000, 40401, 40804, 44100, 44521, 44944 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

Index entries for sequences related to powerful numbers

EXAMPLE

18252=2^2*3^3*13^2 is powerful and 25281=159^2.

CROSSREFS

Cf. A001694, A115690.

Sequence in context: A247009 A245241 A115690 * A061457 A069707 A129967

Adjacent sequences:  A115686 A115687 A115688 * A115690 A115691 A115692

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Jan 31 2006

STATUS

approved

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Last modified January 24 19:19 EST 2020. Contains 331211 sequences. (Running on oeis4.)