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Search: id:A055872
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A055872 a(n) and floor[a(n)/8] are both squares; i.e. squares which remain squares when written in base 8 and last digit is removed. +0
2
0, 1, 4, 9, 36, 289, 1156, 9801, 39204, 332929, 1331716, 11309769, 45239076, 384199201, 1536796804 (list; graph; listen)
OFFSET

0,3

EXAMPLE

a(5) = 289 because 289 = 17^2 = 441 base 8, and 44 base 8 = 36 = 6^2

CROSSREFS

Cf. A023110.

Sequence in context: A118548 A077211 A073977 this_sequence A066924 A101529 A118639

Adjacent sequences: A055869 A055870 A055871 this_sequence A055873 A055874 A055875

KEYWORD

base,nonn

AUTHOR

Henry Bottomley (se16(AT)btinternet.com), Jul 14 2000

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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