23244

Appears in sequences

• Starting positions of strings of 3 1's in the decimal expansion of Pi.at n=23A050209
• Determinant of rank n matrix of 1..n^2 filled successively back and forth along antidiagonals.at n=5A078475
• Least k such that k*p(n)#/5-3+j is prime for j=2,4,8.at n=44A111122
• Number of (n+1)X2 0..3 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards.at n=2A205174
• Number of (n+1) X 4 0..3 arrays with the permanents of 2 X 2 subblocks nondecreasing rightwards and downwards.at n=0A205176
• T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards.at n=3A205181
• T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards.at n=5A205181
• Number of (n+1)X4 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing.at n=0A205275
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing.at n=3A205277
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing.at n=5A205277
• Number of nonnegative integer arrays of length n+5 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value 3.at n=7A211843
• T(n,k)=Number of nonnegative integer arrays of length n+2k+1 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value k+1.at n=43A211849
• Number of n x n permutation matrices that disconnect their zeros.at n=7A217447
• Index sequence for limit-block extending A000002 (Kolakoski sequence) with first term as initial block.at n=42A246145
• Number of compositions (ordered partitions) of n into decimal palindromic primes (A002385).at n=29A286970
• a(n) is the total surface area of a hollow cubic block (defined as a block with a shell thickness of 1 cube) where n is the edge length of the removed volume.at n=42A309842
• Smallest number k such that A345112(k) = n.at n=21A357361