3453450
domain: N
Appears in sequences
- Alkane (or paraffin) numbers l(12,n).at n=19A018213
- One half of binomial coefficients binomial(2*n-8,9).at n=9A053133
- Number of ways to place 3 points on a triangular grid of side n so that they are not vertices of an equilateral triangle of any orientation.at n=22A240440
- Number of possible plugboard settings for a WWII German Enigma Cipher Machine with n cables.at n=3A266365
- Number of 9-element subsets of [n+9] having an even sum.at n=19A282077
- Number of n-element subsets of [n+9] having an even sum.at n=19A282085
- Coefficient of x^n in the expansion of (1+x^4+x^5)^n.at n=26A387200