A159016 Square array A, read by antidiagonals, with entry n in row k given by A(k,0) = A028387(k) and A(k,n) = A(k,n-1) + floor(sqrt(A(k,n-1))), n>0, k>=0.

1, 2, 5, 3, 7, 11, 4, 9, 14, 19, 6, 12, 17, 23, 29, 8, 15, 21, 27, 34, 41, 10, 18, 25, 32, 39, 47, 55, 13, 22, 30, 37, 45, 53, 62, 71, 16, 26, 35, 43, 51, 60, 69, 79, 89, 20, 31, 40, 49, 58, 67, 77, 87, 98, 109, 24, 36, 46, 56, 65, 75, 85, 96, 107, 119, 131

Offset: 0

Author

Philippe Deléham, Apr 02 2009

Keywords

• nonn
• tabl

Comments

Permutation of positive integers.

Examples

			Array begins:
...1....2....3....4....6....8...10...13...16...20..
...5....7....9...12...15...18...22...26...31...36..
..11...14...17...21...25...30...35...40...46...52..
..19...23...27...32...37...43...49...56...63...70..
..29...34...39...45...51...58...65...73...81...90..
..41...47...53...60...67...75...83...92..101..111..
..55...62...69...77...85...94..103..113..123..134..
..71...79...87...96..105..115..125..136..147..159..
..89...98..107..117..127..138..149..161..173..186..
.109..119..129..140..151..163..175..188..201..215..
		

Crossrefs

Cf. A002984 (= row 0), A028387, A008865, A014209, A028392.

Extensions

Definition corrected by Philippe Deléham, Apr 04 2009

Edited by L. Edson Jeffery, May 28 2013