23073

Appears in sequences

• Numbers that are the sum of 5 positive 7th powers.at n=34A003372
• Becomes prime or 4 after exactly 9 iterations of f(x) = sum of prime factors of x.at n=16A048131
• Table by antidiagonals of rows of sequences where each row is binomial transform of preceding row and row 1 is (1,2,1,2,1,2,1,2,...).at n=71A061298
• Column 1 of triangle A091604.at n=28A091611
• Indices of primes in sequence defined by A(0) = 73, A(n) = 10*A(n-1) + 63 for n > 0.at n=21A101155
• Triangle read by rows: number of labeled partitions of n with maximin m.at n=58A113547
• 6-free Fibonacci numbers.at n=27A232666
• Main diagonal of Unlucky array: a(n) = A255543(n,n).at n=26A255549
• a(n) is the number of regions formed by n-secting the angles of an octagon.at n=40A335769
• Triangle read by rows: T(n,m), n >= 1, 1 <= m <= n, is number of partitions of the set {1,2,...,n} that have at most one block contained in {1,...,m}.at n=51A362924
• Triangle read by rows: T(n,m), n >= 0, 0 <= m <= n, is number of partitions of the set {1,2,...,n} that have at most one block contained in {1,...,m}.at n=62A362925
• Triangle read by rows: A113547 without its main diagonal.at n=48A362926
• Numbers k such that k, k+1, k+2, k+3 have 2, 3, 4, 5 prime factors respectively, counted with multiplicity.at n=26A363391
• a(n) is the number of multisets of n positive decimal digits where the sum of the digits equals the product of the prime digits.at n=45A384505