34921

Appears in sequences

• Number of subsequences of [ 1,...,n ] in which each odd number has an even neighbor.at n=17A007455
• a(n) = 3*a(n-1) + 2*a(n-2), with a(0)=1, a(1)=5.at n=8A007483
• Composite and every divisor (except 1) contains the digit 4.at n=24A062670
• Numbers n such that phi(phi(n)) + sigma(sigma(n)) - phi(sigma(n)) - sigma(phi(n)) = sigma(n).at n=5A066946
• Number of arrays of 5 integers in -n..n with sum zero and equal numbers of elements greater than zero and less than zero.at n=11A201813
• Number of 5 X n 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-1) or (-2,0) and new values introduced in order 0..2.at n=7A274897
• Numbers k such that 9*10^k + 89 is prime.at n=27A278335
• Number of partitions of n into an even number of parts that are not multiples of 4.at n=52A339406