43505

Appears in sequences

• a(n) = n*(2*n^2 + n + 1)/2.at n=34A085786
• p-INVERT of A175676 (starting at n=3), where p(S) = 1 - S - S^2.at n=15A289844
• a(n) = [x^n] Product_{k>=1} ((1 - x^(3*k))/(1 - x^k))^n.at n=8A296162
• Number of compositions of n whose standard factorization into Lyndon words has all strict compositions as factors.at n=20A299023
• Numbers k such that N = k^6 is a twin rank (cf. A002822: 6N +- 1 are twin primes).at n=18A326236