40917
domain: N
Appears in sequences
- a(n) = floor(X/Y) where X = concatenation in decreasing order of (2n)-th even number to (n+1)-th even number and Y = that of first n even numbers in increasing order.at n=24A067092
- a(n) = 7 + floor((2 + Sum_{j=1..n-1} a(j))/3).at n=30A120153
- Number of (n+1)X(5+1) 0..2 arrays x(i,j) with every row sum{j*x(i,j), j=1..5+1} equal, and every column sum{i*x(i,j), i=1..n+1} equal.at n=4A232613
- T(n,k) is the number of (n+1) X (k+1) 0..2 arrays x(i,j) with every row Sum_{j=1..k+1} j*x(i,j) equal, and every column Sum_{i=1..n+1} i*x(i,j) equal.at n=40A232614
- Number of partitions of n with difference -5 between the number of odd parts and the number of even parts, both counted without multiplicity.at n=49A242687
- Number of length 2+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.at n=33A250321
- Decimal representation of the middle column of the "Rule 107" elementary cellular automaton starting with a single ON (black) cell.at n=15A267157