A055301 Column 2 of triangle A055300.

1, -1, 0, 1, 0, -3, -1, 14, 20, -77, -308, 147, 3965, 12527, -26255, -446923, -1127033, 9020388, 71170748, 57286010, -2168151928, -17700260071, -11899834419, 993097077555, 7077421523510, -12873010724109

Offset: 2

Author

Christian G. Bower, May 09 2000

Keywords

• sign

Links

• Index entries for sequences related to trees

Crossrefs

Cf. A055300.