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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A203518 a(n) = Product_{2 <= i < j <= n+1} (F(i) + F(j)), where F = A000045 (Fibonacci numbers).

Table of values

n a(n)
1 1
2 3
3 60
4 20160
5 259459200
6 329533940736000
7 102591687479575117824000
8 20251578856869019790329341542400000
9 6518596139761671764183992268499872995344384000000
10 8899914870403074273776879003081000194727401271025610417766400000000

List of values

[1, 3, 60, 20160, 259459200, 329533940736000, 102591687479575117824000, 20251578856869019790329341542400000, 6518596139761671764183992268499872995344384000000, 8899914870403074273776879003081000194727401271025610417766400000000]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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