19474
domain: N
Appears in sequences
- Non-balanced numbers in A015771.at n=31A078549
- Row sums in A082259.at n=13A082261
- Triangle T read by rows: matrix product of Pascal and Catalan triangle.at n=48A104259
- Numbers n such that first n digits of Soldner's constant gives a prime number.at n=4A122422
- Inverse of Fibonacci convolution array A154929.at n=48A154930
- Riordan array (1, (1/(1-x))c(x/(1-x))), c(x) the g.f. of A000108.at n=59A155887
- Numbers k such that 6^k - 7 is prime.at n=27A217352
- Number of n X 6 binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.at n=3A228794
- T(n,k)=Number of nXk binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.at n=39A228796
- Number of 4 X n binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.at n=5A228799
- Number of modified skew Dyck paths of semilength n.at n=9A230823
- Number of triple-crossings of diagonals in the regular 2n-gon.at n=19A260417
- Expansion of Product_{k>=1} 1/(1 - (5*k-2)*x^(5*k-2)).at n=29A265832