A038670 Concatenations of two squares in two ways.

164, 1441, 1625, 1961, 2564, 4841, 12116, 14449, 16400, 25625, 46241, 48464, 115625, 116641, 144100, 148841, 160025, 162500, 163844, 169169, 184964, 193636, 196100, 256400, 361225, 368649, 466564, 484100, 493025, 961009, 973441

Offset: 1

Author

David W. Wilson

Keywords

• base
• nonn

Comments

Equals A192993 for terms < 40000000, see comment and b-file in A192993. - Reinhard Zumkeller, Jul 15 2011

Subsequence of A192993; A193095(a(n)) = 2. - Reinhard Zumkeller, Jul 17 2011

Examples

			a(1) = 164 = concat(1^2,8^2) = concat(4^2, 2^2).
		

Programs

Haskell

import Data.List (elemIndices)
a038670 n = a038670_list !! (n-1)
a038670_list = elemIndices 2 $ map a193095 [0..]
-- Reinhard Zumkeller, Jul 17 2011