83780

Appears in sequences

• Bisection of Lucas triangle A060922: odd-indexed members of column sequences of A060922 (not counting leading zeros).at n=31A060924
• Third convolution of Lucas numbers A000032(n+1), n >= 0.at n=9A060930
• Numbers k such that sopfr(k) = sopf(k+1), where sopf(k) = A008472(k) and sopfr(k) = A001414(k).at n=39A064675
• Numbers k such that bsigma(k) = bsigma(k+1), where bsigma(k) is the sum of the bi-unitary divisors of k (A188999).at n=39A293183
• Numbers k such that A113184(k) = A113184(k+1).at n=26A348585