login
A270959
Number of set partitions of [n] having exactly five pairs (m,m+1) such that m+1 is in some block b and m is in block b+1.
2
4, 127, 1856, 20074, 191967, 1753407, 15845905, 144101608, 1329935983, 12512797900, 120312183453, 1183814298898, 11928314725101, 123117825217659, 1301722909447207, 14096302961791594, 156301760858165116, 1773962132569829592, 20600385809700410195
OFFSET
9,1
LINKS
EXAMPLE
a(9) = 4: 1369|258|47, 136|259|48|7, 139|258|47|6, 159|248|37|6.
CROSSREFS
Column k=5 of A270953.
Sequence in context: A348814 A070781 A152421 * A291851 A128790 A267796
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Mar 26 2016
STATUS
approved