A063678 Arithmetic mean of largest subset of {A063676(1), ......., A063676(n-1)} such that a(n) is an integer and a(n) is maximal.

1, 2, 3, 4, 5, 8, 9, 13, 16, 16, 28, 34, 44, 51, 67, 89, 96, 125, 156, 175, 212, 212, 331, 377, 438, 510, 626, 737, 900, 1020, 1238, 1392, 1472, 1847, 1847, 2488, 2836, 3476, 4000, 4443, 5289, 6073, 6779, 7977, 9130, 10435, 10408, 13269, 15091, 17095

Offset

1,2

Comments

a(n) = A063676(n+1) - A063676(n) (by definition)

Links

Table of n, a(n) for n=1..50.

Example

The arithmetic mean of the first 7 A063676-elements is (1 + 2 + 4 + 7 + 11 + 16 + 24) / 7 = 65 / 7 which is not an integer; but skipping A063676(5) = 11 yields a(7) = 54 / 6 = 9.

Crossrefs

A063676.

Sequence in context: A161240 A165652 A191851 * A005424 A105317 A342094

Adjacent sequences: A063675 A063676 A063677 * A063679 A063680 A063681

Keyword

nonn

Author

Reinhard Zumkeller, Jul 28 2001

Status

approved