23313

Appears in sequences

• Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite CLO = Cloverite starting with a T3 atom.at n=6A019001
• Numbers k such that 173*2^k+1 is prime.at n=3A032463
• Number of numbers <= 10^n that are products of two distinct primes.at n=4A036351
• Bell triangle A011971 squared.at n=17A095799
• Centered 47-gonal numbers.at n=31A129428
• Concatenation of n-th Fibonacci number and n.at n=12A139114
• 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, 0, 1), (-1, 1, 0), (0, 0, -1), (1, 0, 1)}.at n=9A149240
• Number of 6 X n arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 6 X n array.at n=18A220036
• The Hwang-Deutsch function f_4(n).at n=48A260997
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 673", based on the 5-celled von Neumann neighborhood.at n=25A273406
• Number of n X n 0..2 arrays with no element equal to any value at offset (-2,-1), (-1,0) or (-1,1) and new values introduced in order 0..2.at n=5A275177
• Number of nX6 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,0) or (-1,1) and new values introduced in order 0..2.at n=5A275181
• Number of 6 X n 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,0) or (-1,1) and new values introduced in order 0..2.at n=5A275186
• a(1) = 1; a(n) = a(n-1) + 2 * a(floor(n/2)).at n=40A347027