A140897 Positions of hexagonal numbers in the EKG sequence.

1, 4, 11, 26, 39, 59, 93, 110, 148, 174, 218, 255, 321, 353, 410, 471, 536, 594, 685, 739, 816, 878, 990, 1069, 1171, 1261, 1374, 1448, 1580, 1696, 1837, 1924, 2049, 2185, 2307, 2448, 2620, 2717, 2874, 3036, 3185, 3350, 3514, 3679, 3841, 3976, 4201, 4373

Offset: 1

Author

Parthasarathy Nambi, Jul 24 2008

Keywords

• nonn

Examples

			The hexagonal number 4560 is located at position 4373 in the EKG sequence.
		

Crossrefs

Cf. A000384, A064413.