18378

Appears in sequences

• Number of partitions satisfying cn(0,5) + cn(1,5) + cn(4,5) <= cn(2,5) + cn(3,5).at n=41A039878
• Number of degeneracies on the sets of n ordinary trees with n vertices. These are the values of the average distance sum connectivity index, J, in Table 15 of the paper by Elena V. Konstantinova and Maxim V. Vidyuk.at n=9A125067
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, 1, 1), (0, 1, -1), (1, 0, 1)}.at n=9A148857
• Number of 1-sided polyrhombs with n cells.at n=9A151522
• Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 2 X n array.at n=26A219382
• Number of arrays of the median of three adjacent elements of some length -(n+2) 0..3 array.at n=7A228735
• T(n,k) = number of arrays of the median of three adjacent elements of some length n+2 0..k array.at n=52A228740
• Triangle read by rows: coefficients of polynomials P_n(x) arising from RNA combinatorics.at n=7A270791
• Number of nXnXn triangular 0..4 arrays with new values introduced in sequential zero-upwards order and exactly one 2x2x2 triangle having values all equal.at n=3A271072
• T(n,k)=Number of nXnXn triangular 0..k arrays with new values introduced in sequential zero-upwards order and exactly one 2x2x2 triangle having values all equal.at n=24A271075
• Number of nX5 0..1 arrays with every element unequal to 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=11A305179
• Integers that concatenate 3 counts: the number of terms in the sequence so far, the number of primes in the sequence so far, the number of digits in the sequence so far, with a(1)= 113. The sequence is always extended with the smallest available integer not leading to a contradiction or a dead end.at n=17A309617
• Numbers k such that 345*2^k+1 is prime.at n=47A319742
• Number of ways to write n as an ordered sum of 6 nonprime numbers.at n=35A341483