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A018828 Numbers n such that n is a substring of its square in base 4 (written in base 10). 0
0, 1, 4, 16, 41, 54, 64, 164, 165, 256, 290, 487, 545, 566, 1024, 1160, 1948, 2180, 3546, 4096, 4226, 4261, 7625, 8321, 8720, 9514, 13813, 13867, 15913, 16158, 16384, 16904, 33284, 46126, 54854, 55468, 63652, 64632, 65536, 66050, 67616, 113047, 130591 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..43.

CROSSREFS

Sequence in context: A007057 A206918 A056373 * A323847 A114211 A188124

Adjacent sequences:  A018825 A018826 A018827 * A018829 A018830 A018831

KEYWORD

nonn,base

AUTHOR

David W. Wilson

STATUS

approved

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Last modified October 22 18:17 EDT 2019. Contains 328319 sequences. (Running on oeis4.)