821356

Appears in sequences

• Difference of two positive 7th powers.at n=19A181126
• a(n) = 7^n - 3^n.at n=7A190541
• Triangle read by rows, T(n, k) = 4^k*S_4(n, k) where S_m(n, k) are the Stirling-Frobenius subset numbers of order m; n >= 0, k >= 0.at n=29A225467
• Triangle read by rows, k!*S_4(n, k) where S_m(n, k) are the Stirling-Frobenius subset numbers of order m; n >= 0, k >= 0.at n=29A225473