2,2
Table of n, a(n) for n=2..9.
Numerators of sequence a[ 2, n ] in (a[ i, j ])^4 where a[ i, j ] = S(i, j)/BellNumber(i) if j<=i, 0 if j>i
Sequence in context: A172344 A187421 A186213 * A137563 A204487 A090177
Adjacent sequences: A027511 A027512 A027513 * A027515 A027516 A027517
nonn
Olivier Gérard
approved