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A287255
Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks are <= five.
4
1, 1, 2, 5, 15, 52, 203, 876, 4104, 20666, 111075, 633704, 3819875, 24230302, 161175189, 1120918549, 8129696204, 61351621492, 480802257296, 3905922860317, 32839970931663, 285348575175351, 2559007785431183, 23657489230231038, 225209876301752325
OFFSET
0,3
LINKS
FORMULA
a(n) = A287216(n,5).
a(n) = A000110(n) for n <= 6.
CROSSREFS
Column k=5 of A287216.
Cf. A000110.
Sequence in context: A276722 A287584 A287277 * A284727 A056273 A141080
KEYWORD
nonn
AUTHOR
Alois P. Heinz, May 22 2017
STATUS
approved