A275571 Incorrect duplicate of A004146.

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.

Links

Table of n, a(n) for n=1..29.

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

Adjacent sequences: A275568 A275569 A275570 * A275572 A275573 A275574

Keyword

dead

Author

He Wenyang, Aug 02 2016

Status

approved