29665

Appears in sequences

• Smallest d such that real quadratic field with discriminant d has class number n.at n=31A081364
• Graham-Pollak sequence with initial term 5.at n=25A091522
• Number of n X n binary arrays with all ones connected only in a 1100-0100-0111-0001 pattern in any orientation.at n=8A147193
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1100-0100-0111-0001 pattern in any orientation.at n=18A147195
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1100-0100-0111-0001 pattern in any orientation.at n=19A147195
• Number of digits in n-th even perfect number written in base 8.at n=26A161514
• Partial sums of sequence A177342.at n=16A178073
• Beach-Williams Pell numbers of type pqr (p,q,r primes).at n=1A212079
• Number of permutations of n elements with at most one fixed point.at n=8A212291
• Number of non-equivalent ways to choose two points in an equilateral triangle grid of side n.at n=33A227327
• Number of nX7 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=2A281801
• T(n,k)=Number of nXk 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=38A281802
• Number of 3Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=6A281804
• Number of nX4 0..1 arrays with every element equal to 0, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.at n=11A298585