26752

Appears in sequences

• Degrees of irreducible representations of O'Nan group ON.at n=6A003919
• Number of walks on square lattice.at n=6A005567
• a(n) = (n+1)*(n^2+n+2)/2; g.f.: (1 + 2*x^2) / (1 - x)^4.at n=37A006000
• Number of partitions of n with equal number of parts congruent to each of 0 and 2 (mod 5).at n=49A035553
• Triangle of numbers arising in enumeration of walks on square lattice.at n=33A052175
• Triangle of numbers arising in enumeration of walks on square lattice.at n=61A052176
• a(n) = 2*a(n-1) + 2*a(n-2), a(0)=0, a(1)=4.at n=10A116556
• Sum of all Wiener indices of "chemical" trees described by A000602(n).at n=10A122684
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, -1), (-1, 0, 1), (0, 1, 0), (1, 0, 0)}.at n=9A149921
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 1, 1), (1, 0, 0), (1, 0, 1)}.at n=9A150029
• Number of ways to place zero or more nonadjacent 2,1 2,2 3,0 3,1 4,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.at n=7A155314
• Number of line segments connecting exactly 9 points in an n x n grid of points.at n=47A177725
• Numbers with prime signature {7,1,1}, i.e., of form p^7*q*r with p, q and r distinct primes.at n=36A179696
• Numbers that are 4-digit palindromes in at least 2 bases.at n=31A180453
• Number of functions f:{1,2,...,n}->{1,2,...,n} such that each component of f is a function on an interval of {1,2,...,n}.at n=6A219530
• Number of n X 2 arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X 2 array.at n=23A220147
• Consider a number of k digits n = d_(k)*10^(k-1) + d_(k-1)*10^(k-2) + … + d_(2)*10 + d_(1). Sequence lists the numbers n such that Sum_{i=1..k-1}{sigma(Sum_{j=1..i}{d_(j)*10^(j-1)})} = Sum_{i=1..k-1}{phi(Sum_{j=1..i}{d_(k-j+1)*10^(i-j)})} (see example below).at n=17A244068
• Indices of centered pentagonal numbers (A005891) which are also octagonal numbers (A000567).at n=3A253922
• 40-gonal numbers: a(n) = 38*n*(n-1)/2 + n.at n=38A261191
• Decimal representation of the middle column of the "Rule 126" elementary cellular automaton starting with a single ON (black) cell.at n=14A267367