32480
domain: N
Appears in sequences
- Theta series of D*_30 lattice.at n=6A022083
- Number of partitions of n in which the least part is odd.at n=39A026804
- Number of points of l_1 norm n in the "diamond" lattice D^+_4.at n=29A035878
- McKay-Thompson series of class 9c for the Monster group.at n=41A058095
- Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1),U=(1,2), or d=(1,-1) and have k peaks (i.e., ud and Ud's).at n=23A108425
- Least n-bit number whose binary representation's substrings represent the maximal number (A112509(n)) of distinct integers.at n=14A112510
- If X_1, ..., X_n is a partition of a 2n-set X into 2-blocks then a(n) is equal to the number of 3-subsets of X containing none of X_i, (i=1,...,n).at n=27A130809
- Antidiagonal sums of the convolution array A213778.at n=27A213780
- Number of nX2 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4.at n=7A240407
- T(n,k)=Number of nXk 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4.at n=43A240412
- Relative of Hofstadter Q-sequence: a(n) = max(0, n+32478) for n <= 0; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) for n > 0.at n=2A274058
- Triangle read by rows: T(n,k) is the number of labeled semigroups with n elements whose center contains k elements.at n=17A391157