76438

Appears in sequences

• 5th-order digital invariants: the sum of the 5th powers of the digits of n equals some number k and the sum of the 5th powers of the digits of k equals n.at n=5A072896
• Let n = d_1 d_2 ... d_k in base 10 and f(n) = Sum_{i=1..k} d_i^k; sequence gives numbers n such that n != f(n) but n = f(f(n)).at n=5A101335
• Numbers k such that 5*10^k + 4*R_k - 1 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=12A103014
• Base-10 pseudo-altruistic numbers.at n=29A157714
• Amicable digital pairs: The larger number of a pair (x,y) with x <> y such that, in decimal notation and with an appropriate number of leading zeros prepended, x=(x_m...x_1x_0)_{10}, y=(y_m...y_1y_0)_{10}, x = y_m^m + ... + y_1^m + y_0^m, and y = x_m^m + ... + x_1^m + x_0^m.at n=3A262092
• Amicable digital pairs: A262091 and A262092 interleaved.at n=7A262615
• Amicable digital numbers.at n=8A264951
• Amicable digital pair: the pairs from A262615 ordered by their smallest member.at n=7A264958