18216

Appears in sequences

• Floor[n(n-1)(n-2)(n-3)/14].at n=24A011924
• Self-convolution of array T given by A026681.at n=7A026986
• a(n) = n^3 + (n+1)^3 + (n+2)^3 + (n+3)^3.at n=15A027603
• Weight distribution of hypothetical [ 24,12,10 ] trace-self-dual additive code over GF(4).at n=5A030331
• Theta series of lattice D3 tensor D3* (dimension 9, det. 262144, min. norm 6).at n=22A033694
• Multiplicity of highest weight (or singular) vectors associated with character chi_124 of Monster module.at n=43A034512
• Multiplicity of highest weight (or singular) vectors associated with character chi_186 of Monster module.at n=39A034574
• Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,5.at n=30A064239
• a(n) = n * [1 + sum(k=1 to n-1) prime(k)].at n=23A083719
• Main diagonal of symmetric square table A084867, in which the antidiagonal sums (A006012) form the first row shifted left.at n=7A084868
• (prime(n-1) + 1)*(prime(n+1) - 1).at n=31A087105
• Triangle read by rows: T(n,k) (n >= 2, k >= 0) is the number of non-crossing connected graphs on n nodes on a circle, having k triangles. Rows are indexed 2,3,4,...; columns are indexed 0,1,2,....at n=33A089435
• Number of 5-way intersections in the interior of a regular 6n-gon.at n=45A137939
• First trisection of A028560.at n=44A147651
• a(n) = 225*n^2 - n.at n=8A156813
• a(n) = 81*n^2 - 9.at n=14A157909
• Numbers such that each digit from 0 to 9 appears at least 7 times in the digits of their divisors.at n=15A175507
• Sum of divisors of the product of two consecutive primes.at n=31A180617
• Number of 4-step one or two space at a time rook's tours on an n X n board summed over all starting positions.at n=8A187289
• a(n) = 6*a(n-1) + 10*a(n-2), with a(0)=0, a(1)=1.at n=6A190005