26562

Appears in sequences

• Near Cullen numbers: k such that (k+1)*2^k + 1 is prime.at n=26A029544
• Palindromic even lucky numbers.at n=37A045960
• Largest palindromic substring in 5^n.at n=18A046263
• Largest palindromic substring in 5^n.at n=34A046263
• Largest palindromic substring in 5^n.at n=50A046263
• Palindromes with exactly 4 distinct prime factors.at n=14A046394
• Palindromic even squarefree numbers with an even number of distinct prime factors.at n=26A075811
• 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, 0), (-1, 0, 1), (-1, 1, -1), (0, 1, -1), (1, 0, 1)}.at n=9A149188
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 54", based on the 5-celled von Neumann neighborhood.at n=41A270024
• a(n) = 3*(3*n+1)*(9*n+8)/2.at n=25A304504
• a(n) = 2*(a(n-1)+a(n-2)+a(n-3))-a(n-4) for n >= 4, with initial terms 0,0,1,0.at n=13A317976
• Number of length-n ternary words that are bi-maximally squarefree.at n=53A323487
• Numbers k such that k + A067666(k) is a square.at n=30A386257