A272676 Smallest number greater than previous term such that a(n)^2 begins with n.

0, 1, 5, 6, 7, 23, 25, 27, 29, 30, 32, 34, 35, 37, 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 188, 190, 193, 195, 198, 200, 203, 205, 208

Offset: 0

Author

Nathan Fox, Brooke Logan, and N. J. A. Sloane, May 21 2016

Keywords

• nonn
• base

Examples

			a(4) = 7 because 7^2 = 49 begins with 4. (Without the monotonic condition, we could have used 4 - this would give A018851.)
		

Links

• Chai Wah Wu, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A077502 (the squares), A018851, A018796.