25544

Appears in sequences

• Imaginary Rabbits: imaginary part of a(0)=i; a(1)=-i; a(n) = a(n-1) + i*a(n-2), with i = sqrt(-1).at n=35A014291
• First differences are A005563.at n=41A047732
• McKay-Thompson series of class 40A for Monster.at n=53A058662
• Integral quotients of products of consecutive composites divided by their sums: sums (divisors).at n=37A141091
• a(n) = (3*n+1)*(5*n+1).at n=41A144459
• 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, 0, 1), (0, 1, 0), (1, 0, -1), (1, 0, 1)}.at n=8A150236
• G.f.: (21+104*x+103*x^2+23*x^3+x^4)/(1-x)^5.at n=6A160787
• Numerator of A166100(A166101(n))/A166102(n).at n=35A166272
• First of 3 or more consecutive integers with equal values of phi(phi(n)).at n=23A167767
• Number of 0..n arrays of length 5 with each element differing from at least one neighbor by 2 or more.at n=7A221525
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 779", based on the 5-celled von Neumann neighborhood.at n=27A273540
• a(n) is the number of unlabeled rank-3 graded lattices with 4 coatoms and n atoms.at n=33A322599
• Even composite positive integers m such that A052918(m-1)^2 == 1 (mod m).at n=17A338313
• Number of plane partitions of n having exactly one row and one column, each of equal length.at n=30A356367