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

2,6

Links

Table of n, a(n) for n=2..27.

Index entries for sequences related to trees

Crossrefs

Cf. A055300.

Sequence in context: A079638 A018858 A101820 * A286704 A286080 A286768

Adjacent sequences: A055298 A055299 A055300 * A055302 A055303 A055304

Keyword

sign

Author

Christian G. Bower, May 09 2000

Status

approved