35679

Appears in sequences

• arcsin(tan(x)+sin(x))=2*x+9/3!*x^3+345/5!*x^5+35679/7!*x^7...at n=3A012938
• Square root of n has the same nonzero digit in each of the first 4 places to the right of the decimal point.at n=13A073585
• a(1) = 9, then the smallest number such that the forward as well as the reverse n-th partial concatenation is a prime for n>1. (Reverse concatenation is taken term-wise and not digit-wise).at n=39A083995
• a(n) = 81*n^2 - 2*n.at n=20A157507
• Spiral on a 2D square lattice, one term per cell, starting at the origin with 0; the four integers forming any 2 X 2 square have all digits 0 through 9 (with duplicate digits allowed).at n=19A337368
• Number of compositions of n avoiding the patterns (1,2,3) and (3,2,1).at n=21A381981
• a(n) = Sum_{k=0..n} binomial(n+2*k+1,n-k) * Fibonacci(k+1).at n=8A390826