0,2

a(4) = 37 = sum of row 4 terms of triangle A131404: (1 + 11 + 13 + 11 + 1).

Cf. A131404.

Sequence in context: A023612 A132738 A097442 this_sequence A042243 A041887 A129441

Adjacent sequences: A131402 A131403 A131404 this_sequence A131406 A131407 A131408

nonn

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 07 2007