A104442 Number of ways to split 1, 2, 3, ..., tn into n arithmetic progressions each with t terms, t>n.

1, 1, 2, 4, 10, 20, 56, 116, 320, 736, 1872, 4176, 12712, 28368, 73592, 177272, 487304, 1130712, 3209792, 7494720, 20419744, 49706280, 129803592, 311179624

Offset

0,3

Links

Table of n, a(n) for n=0..23.

Crossrefs

Cf. A104429-A104441, A104443.

Sequence in context: A247630 A015889 A090246 * A104434 A104433 A104432

Adjacent sequences: A104439 A104440 A104441 * A104443 A104444 A104445

Keyword

nonn,more

Author

Jonas Wallgren, Mar 17 2005

Extensions

a(0), a(13)-a(23) from Alois P. Heinz, Nov 18 2020

Status

approved