40176

Appears in sequences

• Number of 4 X 4 matrices with nonnegative integer entries and row and column sums equal to n.at n=5A001496
• 10-gonal (or decagonal) pyramidal numbers: a(n) = n*(n + 1)*(8*n - 5)/6.at n=31A007585
• Expansion of 1/((1-6*x)*(1-12*x)).at n=4A016175
• Number of multigraphs with loops on 3 nodes with n edges.at n=28A050531
• Spherical growth series for pair of groups, one Gromov hyperbolic, the other not.at n=3A063809
• Numbers k such that the harmonic mean of the divisors of k is the square of a rational number.at n=12A074266
• Stirling2 triangle with scaled diagonals (powers of 6).at n=16A075501
• 6th binomial transform of (1,5,0,0,0,0,0,0,...).at n=5A081041
• Primitive elements of A096490.at n=22A118671
• Positions of highly powerful numbers in the EKG sequence.at n=22A141422
• Triangle read by rows in which row n lists n+1 terms, starting with n^5 and ending with n^6, such that the difference between successive terms is equal to n^5 - n^4.at n=26A163285
• Number of n X n 0..5 arrays with row sums 5 and column sums 5.at n=4A172862
• Number of n X n 0..5 arrays with row sums 15 and column sums 15.at n=3A172863
• Numbers with 50 divisors.at n=9A175756
• Number of ways to place 2 nonattacking amazons (superqueens) on an n X n toroidal board.at n=17A178972
• Numbers with prime factorization pq^4r^4.at n=9A190012
• Even, nonzero decagonal pyramidal numbers.at n=14A218331
• Partitions with parts repeated at most twice and repetition only allowed if first part has an odd index (first index = 1).at n=59A227134
• Number A(n,k) of n X n nonnegative integer matrices with all row and column sums equal to k; square array A(n,k), n >= 0, k >= 0, read by antidiagonals.at n=49A257493
• Number of nX7 0..2 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two not more than once.at n=1A268970