20872

Appears in sequences

• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MTN = ZSM-39 [Si136O272].qR starting with a T3 atom.at n=13A019183
• Number of (n+1) X 3 binary arrays with every 2 X 2 subblock sum equal to some horizontal or vertical neighbor 2 X 2 subblock sum.at n=4A185490
• Number of (n+1)X6 binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum.at n=1A185493
• T(n,k)=Number of (n+1)X(k+1) binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum.at n=16A185497
• T(n,k)=Number of (n+1)X(k+1) binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum.at n=19A185497
• Sum of binomial(Y(2,p), 2) over the partitions p of n, where Y(2,p) is the number of part sizes with multiplicity 2 or greater in p.at n=29A304825
• Number of odd-length integer partitions of n with integer alternating product.at n=49A347444
• Number of integer partitions of n with integer reverse-alternating product.at n=49A347445
• Expansion of e.g.f. Product_{k>=1} (1 + x^k/k)^2.at n=7A371389
• Number of n X 3 0..2 matrices with row sums 3 and column sums n up to permutations of rows.at n=46A377067