19265

Appears in sequences

• a(n) = Sum_{k=1..n} ceiling(k^4/n).at n=16A014816
• Denominators of continued fraction convergents to sqrt(725).at n=6A042397
• Cumulative sum of primes p such that 2^p - 1 is a Mersenne prime.at n=19A109472
• Indices of the 7-gonal numbers that are the sum of 2 consecutive 7-gonal numbers.at n=2A133327
• Number of n X n binary arrays with all ones connected only in a 1101-1111 pattern in any orientation.at n=6A146863
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1101-1111 pattern in any orientation.at n=14A146865
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1101-1111 pattern in any orientation.at n=15A146865
• Unlabeled super-Catalan numbers: patterns of nonintersecting chords joining unlabeled points on a flippable circle.at n=9A183758
• Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,1,0,2 for x=0,1,2,3,4.at n=7A196899
• T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,3,1,0,2 for x=0,1,2,3,4.at n=47A196904
• T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,3,1,0,2 for x=0,1,2,3,4.at n=52A196904
• Number of (1+1) X (n+1) arrays of permutations of 0..n*2+1 with each element having directed index change 1,0 0,-1 1,2 or -1,1.at n=36A264584