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A106359

Number of compositions of n with exactly 3 adjacent equal parts.

1, 0, 2, 8, 13, 28, 72, 150, 311, 678, 1428, 2864, 5912, 12102, 24168, 48448, 96599, 190544, 375276, 736086, 1435046, 2788930, 5402468, 10424094, 20053479, 38470242, 73582008, 140379426, 267176911, 507295558, 961112738, 1817176426

(list; graph; refs; listen; history; text; internal format)

OFFSET

4,3

LINKS

Table of n, a(n) for n=4..35.

A. Knopfmacher and H. Prodinger, On Carlitz compositions, European Journal of Combinatorics, Vol. 19, 1998, pp. 579-589.

CROSSREFS

Column 3 of A106356. Cf. A003242.

Sequence in context: A297810 A298142 A095825 * A257036 A077241 A228469

Adjacent sequences: A106356 A106357 A106358 * A106360 A106361 A106362

KEYWORD

nonn

AUTHOR

Christian G. Bower, Apr 29 2005

STATUS

approved

URL: https://oeis.org/A106359

⇱ A106359 - OEIS