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A049337
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Triangle read by rows: T(n,k) = number of 3-connected planar graphs (or polyhedra) with n >= 1 nodes and 0<=k<=C(n,2) edges.
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5
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 8, 11, 8, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 11, 42, 74, 76, 38, 14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 74, 296, 633, 768, 558, 219
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,32
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EXAMPLE
| 0; 0,0; 0,0,0,0; 0,0,0,1,0,0,0; 0,0,0,0,0,1,1,0,0,0; 0,0,0,0,0,0,1,2,2,...
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CROSSREFS
| Cf. A000944, A021103, A003094, A049334.
Sequence in context: A006831 A016414 A049801 * A076953 A180472 A093315
Adjacent sequences: A049334 A049335 A049336 * A049338 A049339 A049340
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KEYWORD
| nonn,tabf,easy,nice
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AUTHOR
| Brendan McKay (bdm(AT)cs.anu.edu.au)
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