A107723 Column 0 of triangle A107722.

1, 2, 12, 114, 1446, 22722, 424302, 9168162, 224961774, 6180211842, 187977996366, 6272676296034, 227890380810606, 8955881754461250, 378593286191735694, 17131977268344445218, 826338384025220612526, 42323768184940929568770

Offset: 0

Author

Paul D. Hanna, May 30 2005

Keywords

• nonn

Comments

Shift left 1 place equals twice column 1 of triangle A107717.

Crossrefs

Cf. A107717, A107722.

Programs

PARI