1,2
a(4) = 10 = sum of row 4 terms of triangle A137629: (7 + 2 + 0 + 1).
Cf. A026794, A137629.
Sequence in context: A176222 A008610 A078411 * A092269 A182722 A089483
Adjacent sequences: A137627 A137628 A137629 * A137631 A137632 A137633
nonn
Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 31 2008