24047

Appears in sequences

• n-th 4k+1 prime times n-th 4k-1 prime.at n=17A048630
• Triangle read by rows: number of commutative monoids of order n with k idempotents.at n=41A058142
• Number of configurations of the sliding block 8-puzzle that require a minimum of n moves to be reached, starting with the empty square in one of the corners.at n=24A089473
• Row sums of number triangle A114278.at n=14A114279
• Number of nonnegative integer arrays of length n+3 with new values 0 upwards introduced in order, and containing the value n-1.at n=8A211563
• Squarefree numbers (A005117) with prime factors in a prime(k) + k progression.at n=10A232169
• Squarefree numbers (A005117) of form prime(k)*q where q = primes of the form prime(k) + k.at n=9A232170
• Semiprimes whose prime factors are of equal binary length and which differ from each other in exactly three bit positions.at n=41A261075
• Composite numbers that divide at least one Euclid number.at n=4A297894
• Number of integer partitions of n whose multiplicities have multiplicities that cover an initial interval of positive integers.at n=42A325330
• Number of entries in the ninth blocks of all set partitions of [n] when blocks are ordered by decreasing lengths.at n=3A333066