22486

Appears in sequences

• Convolution of natural numbers with Beatty sequence for the golden mean A000201.at n=42A023541
• Even numbers k such that if a person is born in year k and lives not more than 100 years, then he never celebrates his prime birthday on a prime year.at n=22A124658
• a(n) is the smallest term m in A173978 for which A020639(2m-3) = prime(n), n > 1.at n=42A173980
• Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^4>x^4+y^4.at n=42A211653
• a(n) is the binary XOR of all n-bit triangular numbers.at n=14A298818
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 3 or 8 king-move adjacent elements, with upper left element zero.at n=14A304217
• Number of permutations of [n] whose lengths of increasing runs are prime numbers.at n=9A317131
• Expansion of Product_{1 <= i_1 <= i_2 <= i_3 <= i_4} (1 + x^(i_1*i_2*i_3*i_4)).at n=41A321567