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A275571
Incorrect duplicate of A004146.
0
1, 5, 8, 45, 121, 320, 841, 2205, 5776, 15125, 39601, 103680, 271441, 710645, 1860496, 4870845, 12752041, 33385280, 87403801, 228826125, 599074576, 1568397605, 4106118241, 10749957120, 28143753121, 73681302245, 192900153616, 505019158605, 1322157322201
OFFSET
1,2
COMMENTS
a(3) should be 16, not 8.
Previous name was: Number of spanning trees in the wheel graph G consisting of an n-cycle with a central vertex connected to each vertex of the cycle.
FORMULA
a(n) = Sum_{i=1..n-1} ( Fibonacci(2n-2i)*i^2 ) + n^2.
CROSSREFS
Sequence in context: A126750 A256401 A109292 * A192379 A117474 A294665
KEYWORD
dead
AUTHOR
He Wenyang, Aug 02 2016
STATUS
approved