A175464 Numbers n with property that n^2 contains "1234" as a substring.

1111, 3513, 3514, 9013, 11109, 11110, 11111, 11112, 11113, 14357, 14572, 20524, 22635, 30205, 33518, 35129, 35130, 35131, 35132, 35133, 35134, 35135, 35136, 35137, 35138, 35139, 35140, 35141, 35142, 39003, 39549, 40154, 42616, 46081

Offset

1,1

Comments

Corresponding squares: 1234_321, 1234_1169, 1234_8196, 8_1234_169, 1234_09881, 1234_32100, 1234_54321, 1234_76544, 1234_98769, 206_1234_49.

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

s={}; Do[If[ !StringFreeQ[ToString[k^2], "1234"], AppendTo[s, k]], {k, 0, 100000}]
Select[Range[50000], SequenceCount[IntegerDigits[#^2], {1, 2, 3, 4}]>0&] (* Harvey P. Dale, May 12 2024 *)

Crossrefs

Cf. A178314 Numbers n with property that n^2 contains "123" as a substring.

Sequence in context: A085109 A346000 A074843 * A326110 A043496 A038446

Adjacent sequences: A175461 A175462 A175463 * A175465 A175466 A175467

Keyword

base,nonn

Author

Zak Seidov, May 24 2010

Status

approved