A127861 a(n) = A127859(n)^2.

49, 6241, 889249, 127938721, 18421818529, 2652725580961, 381992288212129, 55006887157191841, 7920991722491368609, 1140622807701026002081, 164249684304894971368609, 23651954539856242601907361

Offset: 1

Author

Walter Kehowski, Feb 04 2007

Keywords

• nonn
• base

Comments

In base 12 the sequence is 41, 3741, 36X741, 36X1X741, 36X151X741, 36X14851X741, 36X147E851X741, 36X147E2E851X741, 36X147E262E851X741, 36X147E25962E851X741, where X is 10 and E is 11.

Examples

			a(1) = A127859(1)^2 = 7^2 = 49.
		

Crossrefs

Cf. A117755, A127856, A127857, A127858, A127859, A127860, A192544.

Formula

a(n) = (6*(12^n - 1)/11 + 1)^2 = A127860(n) + (12^(2*n) - 1)/11. - Max Alekseyev, Jul 27 2023

Extensions

Edited by Max Alekseyev, Jul 27 2023