525698

Appears in sequences

• a(n) = Sum_{i=1..n} nac(i,n) where nac(i,n) is the n-th i-bonacci number. The n-th i-bonacci number here is equal to 1 for the first i terms, with subsequent terms equaling the sum of the previous n terms.at n=20A345372
• Numbers k for which rank of the elliptic curve y^2 = x^3 - 432*k^2 is 5.at n=1A359687