A249617 Integer partition (A194602) of the n-th set partition (A231428).

0, 1, 1, 1, 2, 1, 3, 1, 3, 2, 1, 3, 2, 2, 4, 1, 3, 3, 3, 5, 1, 3, 3, 3, 5, 2, 5, 1, 3, 3, 3, 5, 2, 5, 2, 5, 4, 1, 3, 3, 3, 5, 2, 5, 2, 5, 4, 2, 5, 4, 4, 6, 1, 3, 3, 3, 5, 3, 7, 3, 7, 5, 3, 7, 5, 5, 8, 1, 3, 3, 3, 5, 3, 7, 3, 7, 5, 3, 7, 5, 5, 8

Offset

0,5

Links

Tilman Piesk, Table of n, a(n) for n = 0..9999

Tilman Piesk, Illustrated list of the first 52 equivalence relations

Tilman Piesk, Permutations and partitions in the OEIS (Wikiversity)

Example

The 6th set partition has 2 non-singleton blocks {1,4} and {2,3}, each with 2 elements. This corresponds to the integer partition 2+2, which is the 3rd in the infinite order defined by A194602. So a(6) = 3.

Crossrefs

Sequence in context: A128199 A345063 A337216 * A304091 A278801 A307720

Adjacent sequences: A249614 A249615 A249616 * A249618 A249619 A249620

Keyword

nonn

Author

Tilman Piesk, Nov 02 2014

Status

approved