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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; internal format)
OFFSET

1,2

CROSSREFS

Cf. A104429-A104435, A104437-A104443.

Sequence in context: A040219 A040216 A111122 * A070601 A196187 A004480

Adjacent sequences:  A104433 A104434 A104435 * A104437 A104438 A104439

KEYWORD

nonn

AUTHOR

Jonas Wallgren (jonwa(AT)ida.liu.se), Mar 17 2005

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.