1,2

a(4) = 24 = sum of row 4 terms of triangle A132787: (1 + 11 + 11 + 1).

Cf. A132787.

Sequence in context: A129020 A024024 A027122 this_sequence A109682 A027124 A038765

Adjacent sequences: A132785 A132786 A132787 this_sequence A132789 A132790 A132791

nonn

Gary W. Adamson (qntmpkt(AT)yahoo.com), Aug 30 2007