24714

Appears in sequences

• Number of inequivalent ways (mod D_4) a pair of checkers can be placed on an n X n board.at n=24A014409
• Numbers k such that k and 3*k are anagrams.at n=10A023087
• If n is composite, replace n with the concatenation of its nontrivial divisors, otherwise a(n) = n.at n=27A037279
• a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = 2*n - 2 - 2^(p+1) and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), with a(1) = 1, a(2) = 2, and a(3) = 1.at n=14A049951
• McKay-Thompson series of class 31A for Monster.at n=40A058628
• a(n) is the concatenation of its nontrivial divisors.at n=27A106708
• Number of partitions p of n such that (maximal multiplicity over the parts of p) = (number of numbers in p having multiplicity > 1).at n=51A241132
• Number of partitions of n with difference -1 between the number of odd parts and the number of even parts, both counted without multiplicity.at n=46A242691
• Number of (n+1) X (2+1) 0..3 arrays with every 2 X 2 subblock summing to a nonzero multiple of 3.at n=2A251337
• Number of (n+1) X (3+1) 0..3 arrays with every 2 X 2 subblock summing to a nonzero multiple of 3.at n=1A251338
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock summing to a nonzero multiple of 3.at n=7A251343
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock summing to a nonzero multiple of 3.at n=8A251343
• Number of n X 1 0..3 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.at n=9A268069
• Number of length-(n+7) 0..n arrays with no repeated value equal to the previous repeated value, with new values introduced in sequential order.at n=2A268961
• Absolute value of product of nonzero eigenvalues of upper left (n+1)X(n+1) rank 2 submatrix of Wythoff array.at n=16A300158
• Regular triangle read by rows: T(n,k) is the number of (n,k)-Duck words, for n>=1 and 0<=k<=n-1.at n=19A338403
• Number of integer partitions of n such that no distinct part can be written as a (strictly) positive linear combination of the other distinct parts.at n=40A365072
• E.g.f. satisfies A(x) = 1/(1 - x*A(x)^2)^(x*A(x)^2).at n=6A371146