1,2
s(n) = A000340(n-1).
Sequence in context: A191468 A203243 A198970 * A104209 A121247 A064732
Adjacent sequences: A014847 A014848 A014849 * A014851 A014852 A014853
nonn
N. J. A. Sloane (njas(AT)research.att.com), Olivier Gerard (olivier.gerard(AT)gmail.com)
a(7)-a(16) from Arkadiusz Wesolowski (wesolowski(AT)aol.pl), Jul 03 2011