0,2

a(3) = 25 = sum of row 3 terms of triangle A131429: (5 + 5 + 6 + 9).

Cf. A000108, A131427, A131428, A131429.

Sequence in context: A145130 A048506 A030017 this_sequence A007484 A070859 A048576

Adjacent sequences: A131427 A131428 A131429 this_sequence A131431 A131432 A131433

nonn

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 10 2007