18022

Appears in sequences

• Coordination sequence for MgNi2, Position Ni2.at n=33A009932
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 72 ones.at n=31A031840
• a(n)=floor{square((1*n^0+1*n^1+2*n^2+4*n^3)/(1*n^0+2*n^1+1*n^2))}.at n=34A086863
• Antidiagonal sums of the square array A096583, in which the n-th diagonal equals the convolution of the n-th row with the antidiagonal sums (this sequence).at n=16A096584
• Numbers n such that p(6n) is prime, where p(n) is the number of partitions of n.at n=36A111036
• Number of partitions of n having 1 more even part than odd, so that there is an ordering of parts for which the even and odd parts alternate and the first and last terms are even.at n=53A239832
• Number of partitions of n, where the difference between the number of odd parts and the number of even parts is 1.at n=51A240010
• Number of n X 2 0..3 arrays with no element equal to two plus the sum of elements to its left or two plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4.at n=8A240316
• T(n,k)=Number of nXk 0..3 arrays with no element equal to two plus the sum of elements to its left or two plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4.at n=46A240321
• Molien series for invariants of finite Coxeter group A_9.at n=59A266778
• Numbers k such that 375*2^k+1 is prime.at n=49A323028
• Composite numbers k such that k-A238525(k) and k+A238525(k) are prime.at n=41A342648
• Number of integer partitions of n with integer alternating product.at n=44A347446