180590592

Appears in sequences

• First subdiagonal of number array A082137.at n=10A082143
• a(n) is the number of associate Rota-Baxter words in one idempotent generator x and one idempotent operator P of degree n. Such words are Rota-Baxter words that begin and/or end with x, and P is applied n times in the word.at n=11A181282
• a(n) = 2^(n - HammingWeight(n)) * binomial(2*n, n).at n=11A371357