131059

Properties

Appears in sequences

• Let A(n) = #{(i,j,k): i^2 + j^2 + k^2 <= n}, V(n) = (4/3)*Pi*n^(3/2), P(n) = A(n) - V(n); A000092 gives values of n where |P(n)| sets a new record; sequence gives A(A000092(n)).at n=26A000413
• Primes -p+2^n with smallest p prime, arising in A057674.at n=16A057674
• Primes whose digit reversal is a triangular number.at n=25A115705
• Primes of the form (2^n - 1)*(2^(m+2)) + 3 where n >= 1, m >= 1.at n=21A224383
• Decimal representation of the n-th iteration of the "Rule 213" elementary cellular automaton starting with a single ON (black) cell.at n=8A267802
• a(n) is the least prime p such that p and the next prime > p have exactly n common 1's in their binary expansion.at n=14A374178
• The binary weights of the odd Catalan numbers.at n=17A379152
• Prime numbersat n=12249