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

1,2

Links

Michael De Vlieger, Table of n, a(n) for n = 1..4728 (a(n) <= 43892391.)

Example

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

Crossrefs

Cf. A000384, A064413.

Sequence in context: A266816 A289082 A079467 * A008263 A297149 A159944

Adjacent sequences: A140894 A140895 A140896 * A140898 A140899 A140900

Keyword

nonn

Author

Parthasarathy Nambi, Jul 24 2008

Status

approved