26100

Appears in sequences

• a(n) = n^3 - n^2.at n=30A045991
• Sum of next n composite numbers.at n=34A072475
• This table shows the coefficients of combinatorial formulas needed for generating the sequential sums of p-th powers of triangular numbers. The p-th row (p>=1) contains a(i,p) for i=1 to 2*p-1, where a(i,p) satisfies Sum_{i=1..n} C(i+1,2)^p = 3 * C(n+2,3) * Sum_{i=1..2*p-1} a(i,p) * C(n-1,i-1)/(i+2).at n=22A087127
• a(n) = n*(n+1)^2.at n=28A114364
• Number of 2 X 2 symmetric matrices over Z(n) having nonzero determinant.at n=29A115077
• Exponential abundant numbers: integers k for which A126164(k) > k, or equivalently for which A051377(k) > 2k.at n=26A129575
• Numbers n that raised to the powers from 1 to k (with k>=1) are multiple of the sum of their digits (n raised to k+1 must not be a multiple). Case k=9.at n=25A135194
• Numbers k such that k and k^2 use only the digits 0, 1, 2, 6 and 8.at n=26A136829
• a(n) = p(p+1)^2, where p is the n-th prime.at n=9A178398
• Numbers with prime factorization pq^2r^2s^2.at n=12A189344
• Molecular topological indices of the complete bipartite graphs K_{n,n}.at n=14A192418
• Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 0 1 vertically.at n=9A207724
• Number of 2 X 2 matrices having all terms in {1,...,n} and positive odd determinant.at n=18A211068
• Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and positive odd determinant.at n=8A211158
• Indices of records in A211996.at n=5A218382
• Primitive triangle numbers as defined in A218243.at n=38A218392
• a(n) = 29*n^2.at n=30A244635
• Number of length 1+3 0..n arrays with no four consecutive terms having the sum of any three elements equal to three times the fourth.at n=11A249291
• Number of times a multiple of four is encountered when iterating from 2^(n+1)-2 to (2^n)-2 with the map x -> x - (number of runs in binary representation of x).at n=19A255125
• Number of nX2 arrays containing 2 copies of 0..n-1 with no element 1 greater than its north, northeast or northwest neighbor modulo n and the upper left element equal to 0.at n=5A266884