131282408400
domain: N
Appears in sequences
- a(n) = binomial coefficient C(2n, n-1).at n=20A001791
- Binomial coefficient C(40,n).at n=19A010956
- Binomial coefficient C(40,n).at n=21A010956
- a(n) = binomial(n,19).at n=21A010972
- a(n) = binomial(n,21).at n=19A010974
- T(2n+2,n), array T as in A050186; a count of aperiodic binary words.at n=19A051195
- Terms at square positions in Pascal's triangle when in flattened form.at n=29A268295