30026

Appears in sequences

• Number of maximal sum-free subsets of {1,2,...,n}.at n=37A121269
• Integers that reach the (47360, 29127) cycle described in A234534, after iterations of numerator(sigma(n)/n) = A017665(n).at n=5A249614
• Indices of the start of 10 successive distinct digits in the decimal expansion of Pi.at n=15A258157
• Numbers k such that tau(k) + tau(k+1) + tau(k+2) + tau(k+3) = 16, where tau is the number of divisors function A000005.at n=24A350686
• Numbers k such that primorial base expansion of A276086(k) has the primorial base expansion of A003415(k) as its suffix, where A003415 is the arithmetic derivative, and A276086 is the primorial base exp-function.at n=21A383933