login
A107723
Column 0 of triangle A107722.
0
1, 2, 12, 114, 1446, 22722, 424302, 9168162, 224961774, 6180211842, 187977996366, 6272676296034, 227890380810606, 8955881754461250, 378593286191735694, 17131977268344445218, 826338384025220612526, 42323768184940929568770
OFFSET
0,2
COMMENTS
Shift left 1 place equals twice column 1 of triangle A107717.
PROG
(PARI)
CROSSREFS
Sequence in context: A141141 A128571 A052696 * A258175 A365575 A225797
KEYWORD
nonn
AUTHOR
Paul D. Hanna, May 30 2005
STATUS
approved