27272

Appears in sequences

• cos(sinh(x)+arctan(x))=1-4/2!*x^2+24/4!*x^4-534/6!*x^6+27272/8!*x^8...at n=4A013061
• exp(arctanh(x)+sin(x))=1+2*x+4/2!*x^2+9/3!*x^3+24/4!*x^4+97/5!*x^5...at n=8A013168
• Even palindromes in which parity of digits alternates.at n=41A030149
• Least term in period of continued fraction for sqrt(n) is 7.at n=33A031431
• Palindromic and divisible by 8.at n=39A045643
• Palindromes with exactly 5 prime factors (counted with multiplicity).at n=36A046331
• Numbers whose consecutive digits differ by 5.at n=38A048407
• Numbers n with property that every digit is a prime factor of n.at n=31A062239
• Palindromes with more than 3 digits in which the absolute difference of a pair of successive digits is identical.at n=34A085109
• Number of (n+1) X 3 binary arrays with every 2 X 2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2 X 2 subblock traces.at n=5A186932
• Number of (n+1)X7 binary arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces.at n=1A186936
• T(n,k) = Number of (n+1) X (k+1) binary arrays with every 2 X 2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2 X 2 subblock traces.at n=22A186939
• T(n,k) = Number of (n+1) X (k+1) binary arrays with every 2 X 2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2 X 2 subblock traces.at n=26A186939
• Numbers with digits 2 and 7 only.at n=40A284921
• Numbers k such that 301*2^k+1 is prime.at n=12A322915
• a(n) = Sum_{-n<i<n, -n<j<n, gcd{i,j}=3} (n-|i|)*(n-|j|).at n=24A331774
• Number of ways to write n as an ordered sum of 8 nonzero triangular numbers.at n=47A340953
• Positive integers k with the property that they cannot be converted to a multiple of 11 by changing at most a single decimal digit.at n=1A353023
• Number of chordless cycles (of length >= 4) in the complement of the n-cube connected cycle graph.at n=2A364848