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A104436 Number of ways to split 1, 2, 3, ..., 3n into 3 arithmetic progressions each with n terms. 2
1, 15, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..15.

CROSSREFS

Cf. A104429-A104435, A104437-A104443.

Sequence in context: A272682 A111122 A296009 * A070601 A332843 A196187

Adjacent sequences:  A104433 A104434 A104435 * A104437 A104438 A104439

KEYWORD

nonn

AUTHOR

Jonas Wallgren, Mar 17 2005

STATUS

approved

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Last modified September 23 14:18 EDT 2021. Contains 347617 sequences. (Running on oeis4.)