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A052081 Numbers n with property that n^2 is a square whose decimal expansion digits are grouped together. 5
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 42, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 57, 58, 59, 60, 61, 62, 64, 65, 66, 67, 69, 70, 71, 72, 73, 74, 76, 78, 79, 80, 82, 83 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..72.

EXAMPLE

E.g. 81^2 = 6561 is not OK since the two digits 6 are separated by the 5. Square 88^2 or 7744 is OK since digits 7 and 4 are grouped.

CROSSREFS

Cf. A052082, A052085, A052086, A052083, A052084.

Sequence in context: A241158 A241157 A010784 * A031995 A023752 A048737

Adjacent sequences:  A052078 A052079 A052080 * A052082 A052083 A052084

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Jan 15 2000.

STATUS

approved

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Last modified September 18 17:45 EDT 2019. Contains 327178 sequences. (Running on oeis4.)