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A104433 Number of ways to split 1, 2, 3, ..., 7n into n arithmetic progressions each with 7 terms. 2
1, 2, 4, 10, 20, 56, 117, 323, 745, 1896 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..10.

CROSSREFS

Cf. A104429-A104432, A104434-A104443.

Sequence in context: A090246 A104442 A104434 * A104432 A129211 A175204

Adjacent sequences:  A104430 A104431 A104432 * A104434 A104435 A104436

KEYWORD

nonn

AUTHOR

Jonas Wallgren, Mar 17 2005

STATUS

approved

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Last modified January 27 14:39 EST 2020. Contains 331295 sequences. (Running on oeis4.)