131950
domain: N
Appears in sequences
- Values of i such that phi(x) = 4i+2 has 4 solutions.at n=16A051479
- Sum of next n even interprimes.at n=27A075675
- a(n) = binomial(n+2,2)*binomial(n+5,2).at n=24A105938
- Number of 0..2 arrays of length n+5 with sum no more than 6 in any length 6 subsequence (=50% duty cycle).at n=6A212227
- Number of 0..2 arrays of length 6+2*n with sum no more than 2*n in any length 2n subsequence (=50% duty cycle).at n=2A212239
- T(n,k)=Number of length n+5 0..k arrays with no consecutive six elements summing to more than 3*k.at n=34A242144
- Number of length 7+5 0..n arrays with no consecutive six elements summing to more than 3*n.at n=1A242151
- Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n)^2, where a(0) = 2, a(1) = 4, b(0) = 1, b(1) = 3, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=17A296249