5,2
Same series for 32541 34125 14523
Table of n, a(n) for n=5..14.
Eric Weisstein's World of Mathematics, Permutation Pattern
A056986 A158005
Sequence in context: A158433 A158423 A158430 * A158424 A020594 A158437
Adjacent sequences: A158432 A158433 A158434 * A158436 A158437 A158438
nonn
R. H. Hardin Mar 18 2009
approved