0,2

a(n) = 2*A005493(n) - (n+1).

a(2) = 17 = sum of row 2 terms of triangle A136791: (3 + 5 + 9).

a(2) = 17 = 2* A005493 - 3 = 2*10 - 3.

Cf. A136791, A005493.

Adjacent sequences: A136789 A136790 A136791 this_sequence A136793 A136794 A136795

Sequence in context: A003127 A017955 A017956 this_sequence A108929 A022031 A001076

nonn

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 21 2008