30238

Appears in sequences

• Expansion of (1-x)/(1+2*x^2+x^3).at n=26A078036
• Triangle T(n, k) read by rows; given by [1, 1, 1, 1, 1, 1, 1, 1, ...] DELTA [1, 0, 2, 0, 2, 0, 3, 0, 2, 0, 4, 0, 2, 0, ...] (A000005 interspersed with 0's) where DELTA is Deléham's operator defined in A084938.at n=40A085853
• Number of permutations of length n which avoid the patterns 1342, 3214, 4312.at n=11A116808
• Number of partitions p of n such that (number of even numbers in p) is a part of p.at n=41A241544
• Number of integers in n-th generation of tree T(2^(-1/3)) defined in Comments.at n=43A274158
• Triangle read by rows: T(n,m) (n >= m >= 1) = number of line segments formed by drawing the lines connecting any two of the 2*(m+n) perimeter points of an m X n grid of squares.at n=41A331454
• Numbers k such that k divides the sum of digits in factorial base of all numbers from 1 to k.at n=25A333702