21999
domain: N
Appears in sequences
- Numbers k where cos(k) decreases monotonically to 0.at n=34A046957
- Numbers k where sin(k) increases monotonically to 1 (or cosec(k) decreases).at n=38A046959
- Number of integer partitions of n whose Heinz number (product of primes of parts) is divisible by all parts.at n=46A330952
- G.f. satisfies A(x) = 1 + x^2*A(x)^4*(1 + x*A(x)).at n=12A365609