40384

Appears in sequences

• a(n) = n! + n^2.at n=8A004664
• Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite SOD = Sodalite Na6[ Al6Si6O24 ] . 2 NaCl.at n=6A019060
• First partial sums of A048739; second partial sums of A000129.at n=11A048776
• A Pell convolution.at n=13A113727
• Number of ways to place 3 nonattacking grasshoppers on a toroidal chessboard of size n x n.at n=7A190398
• Number of arrays of 4 integers in -n..n with sum zero and adjacent elements differing in absolute value.at n=19A202964
• Number of (w,x,y,z) with all terms in {0,...,n} and at least one of these conditions holds: w=R, x=R, y<R, z<R, where R = max{w,x,y,z} - min{w,x,y,z}.at n=14A212750
• Number of (n+1)X(n+1) 0..4 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11.at n=2A234209
• Number of (n+1)X(3+1) 0..4 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11.at n=2A234212
• T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11 (11 maximizes T(1,1)).at n=12A234217
• Number of partitions of n into 8 parts such that every i-th smallest part (counted with multiplicity) is different from i.at n=31A244244
• Numbers m such that gcd(s1,s2) = number of the Collatz iterations of m where s1 is the sum of the odd terms and s2 the sum of the even terms in the Collatz trajectory.at n=8A281195
• Number of n X n (0,1)-matrices A over the reals such that A^2 is the transpose of A.at n=9A336614
• Starts of runs of 3 consecutive Pell-Niven numbers (A352320).at n=22A352322
• Numbers k that can be written as the sum of a perfect square and a factorial in at least 2 distinct ways.at n=37A358071
• Number of double cosets of the Sylow 2-subgroup of the symmetric group S_n.at n=15A360808