A052097 a(n)^2 is a square whose decimal expansion digits occur with an exact frequency of 4.

31646191, 33228821, 33333003, 34468078, 34528437, 34597630, 35229568, 36920414, 37605474, 39693346, 41508061, 43076539, 43109691, 43485609, 43529521, 44147309, 44294056, 45455649, 45460011, 45460110, 45961010

Offset

1,1

Comments

Last term is 99999444387327303945. - Giovanni Resta, Mar 21 2013

Links

Table of n, a(n) for n=1..21.

P. De Geest, Numbers whose digits occur with same frequency

Example

33228821 is in the sequence because 33228821^2 = 1104154545050041, in which each digit is repeated 4 times.

Crossrefs

Cf. A052098, A052095, A052096, A052049.

Sequence in context: A125574 A215414 A151621 * A252356 A153752 A209912

Adjacent sequences: A052094 A052095 A052096 * A052098 A052099 A052100

Keyword

nonn,base,fini

Author

Patrick De Geest, Jan 15 2000

Status

approved