A167156 Number of n-vertex 4-hedrites.

1, 0, 2, 0, 2, 0, 4, 0, 3, 0, 5, 0, 3, 0, 7, 0, 5, 0, 7, 0, 4, 0, 11, 0, 5, 0, 8, 0, 8, 0, 12, 0, 6, 0, 13, 0, 6, 0, 15, 0, 10, 0, 11, 0, 7, 0, 21, 0, 10, 0, 13, 0, 12, 0, 18, 0, 9, 0, 22, 0, 9, 0, 21, 0, 14, 0, 16, 0, 14

Offset

2,3

Comments

Is this the same as A145393 alternating with zeros? - Andrey Zabolotskiy, Jul 05 2017

Links

Table of n, a(n) for n=2..70.

Mathieu Dutour Sikiric, Michel Deza, 4-regular and self-dual analogs of fullerenes, arXiv:0910.5323 [math.GT], 2009.

Example

Although every other term is zero, this sequence should be kept, contrary to the usual OEIS rules, to be analogous to the related sequences.

Crossrefs

Cf. A167157, A167158, A167159, A111361.

Sequence in context: A111813 A346773 A362208 * A132952 A319998 A336120

Adjacent sequences: A167153 A167154 A167155 * A167157 A167158 A167159

Keyword

nonn

Author

Jonathan Vos Post, Oct 29 2009

Status

approved