20434

Appears in sequences

• Squares written in base 5.at n=37A001740
• Define the sequence S(a_0,a_1) by a_{n+2} is the least integer such that a_{n+2}/a_{n+1}>a_{n+1}/a_n for n >= 0. This is S(4,8).at n=11A019479
• Row sums of triangle A049324.at n=10A049348
• Numbers n such that 275*2^n-1 is prime.at n=21A050896
• Triangle T(n,k) read by rows given by [0, 1, 3, 6, 10, 15, 21, ...] DELTA [1, 3, 6, 10, 15, 21, 28,...] where DELTA is the operator defined in A084938.at n=19A087736
• Numbers k with property that k + Fibonacci(k) is prime.at n=12A175404
• Number of partitions of n having no parts with multiplicity 8.at n=37A184643
• Potential magic constants of 8 X 8 magic squares composed of consecutive primes.at n=38A189188
• Number of unsensed hypermaps with n darts and any genus.at n=7A215018
• Number of nX3 0..1 arrays with every element unequal to 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.at n=11A316450
• Number of length-n binary words closed by an unbordered word.at n=18A332983