A112508 Counts the objects described in A047969 and A089246 when grouped by minimum part. (Row sums give A047970).

1, 1, 1, 1, 1, 3, 1, 1, 3, 9, 1, 1, 3, 9, 29, 1, 1, 3, 9, 29, 101

Offset

1,6

Links

Table of n, a(n) for n=1..21.

Example

Row 4 of the triangular array is (1 1 3 9) because there are nine tuples with a minimum value of 1, three tuples with a minimum value of 2, one tuple with a minimum value of 3 and one tuple with a minimum value of 4; the relevant unordered partitions are illustrated in the below Gaussian polynomial template:
4
31 32 33
211 221 222
1111

Crossrefs

Cf. A047969, A089246.

Sequence in context: A106621 A011085 A199922 * A260883 A088749 A024737

Adjacent sequences: A112505 A112506 A112507 * A112509 A112510 A112511

Keyword

easy,nonn

Author

Alford Arnold, Sep 08 2005

Status

approved