27298

Appears in sequences

• Sum of the sizes of the tails below the Durfee squares of all partitions of n.at n=26A116365
• Sum of digits of n-th even perfect number.at n=21A138828
• Number of extreme n-breakable vectors.at n=28A141348
• Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+4x+4y>0.at n=19A211626
• Array T(n,k) = least integer congruent to prime(i) mod prime(i+1) for all k <= i <= k+n; n, k >= 1; read by upward diagonals.at n=16A268491
• Expansion of Product_{k>=1} (1 + 2*x^k - x^(2*k)).at n=45A293182
• Number of iterations before a repeated value, or -1 if this never occurs, when starting at k = 1 and repeating k = k*n if k does not contain any adjacent equal digits, else k = k with all adjacent equal digits replaced by a single copy of the same digit.at n=21A368940
• Number of subsets of {1..n} with all equal lengths of maximal anti-runs (increasing by more than 1).at n=20A384889