26784

Appears in sequences

• Pentanacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) + a(n-5), a(0)=a(1)=a(2)=a(3)=0, a(4)=1.at n=20A001591
• Number of protruded partitions of n with largest part at most 5.at n=16A005406
• Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A071667/A071668.at n=14A089876
• Numbers n such that the sum of the digits of Sum_{k=1..n} (k!) is divisible by n.at n=20A109657
• Primitive elements of A096490.at n=17A118671
• A partition product of Stirling_1 type [parameter k = 2] with biggest-part statistic (triangle read by rows).at n=37A157392
• A partition product with biggest-part statistic of Stirling_1 type (with parameter k = -2) as well as of Stirling_2 type (with parameter k = -2), (triangle read by rows).at n=37A157400
• A partition product of Stirling_2 type [parameter k = 2] with biggest-part statistic (triangle read by rows).at n=37A157402
• a(n) = n*(n+1)*(5*n+7)/6.at n=31A162148
• Number of 3 X 3 semimagic squares with distinct positive values and magic sum n.at n=16A173547
• Number of (n+1) X 2 0..2 arrays with no 2 X 2 subblock sum equal to any horizontal or vertical neighbor 2 X 2 subblock sum.at n=3A185771
• Number of (n+1)X5 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum.at n=0A185774
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum.at n=6A185777
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum.at n=9A185777
• Numbers with prime factorization pq^3r^5.at n=13A190011
• Monotonic ordering of set S generated by these rules: if x and y are in S and x^2-y^2>0 then x^2-y^2 is in S, and 2 and 3 are in S.at n=19A192648
• Composite numbers whose multiplicative persistence is 6.at n=34A199996
• Number of compositions of n having smallest part equal to 2.at n=23A200047
• Number of (w,x,y,z) with all terms in {1,...,n} and w+y=|x-y|+|y-z|.at n=37A212677
• Area A of the cyclic quadrilaterals PQRS with PQ>=QR>=RS>=SP, such that A, the sides, the radius of the circumcircle and the two diagonals are integers.at n=38A219225