Included in accordance with OEIS policy of listing published but incorrect sequences, with pointers to the correct versions.
Abramson, Morton; Promislow, David. Enumeration of arrays by column rises. J. Combinatorial Theory Ser. A 24 (1978), no. 2, 247--250. MR0469773 (57 #9554)
Table of n, a(n) for n=1..5.
Sequence in context: A157559 A157586 A042439 * A212806 A030258 A154737
Adjacent sequences: A212842 A212843 A212844 * A212846 A212847 A212848