31226

Appears in sequences

• Numbers k such that 6*k+5, 6*k+11, 6*k+17, 6*k+23 are consecutive primes.at n=28A090836
• 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, 1, 0), (1, 0, 1), (1, 1, 0)}.at n=8A150386
• a(n) = b(n) + b(n+1) + 2, where b() = A000930().at n=26A170934
• The consecutive squares of numbers multiplied by their next consecutive integer.at n=23A193608
• a(n) = (1+(A034939(n))^2)/5^n.at n=8A199206
• a(n) = (A048899(n)^2 + 1)/5^n, n >= 0.at n=8A210849
• Number of nX6 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.at n=4A239984
• T(n,k)=Number of nXk 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.at n=49A239986
• Number of 5Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.at n=5A239989
• Number of conjugacy classes of the symmetric group S_n when conjugating only by even permutations.at n=38A242101
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 65", based on the 5-celled von Neumann neighborhood.at n=35A270085
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 305", based on the 5-celled von Neumann neighborhood.at n=35A271162
• Numbers k such that the equation x^2 - k*y^4 = -1 has a solution for which |y| > 2.at n=20A356488
• a(n) = [x^(n^4)] Product_{k=1..n} (x^(k^4) + 1 + 1/x^(k^4)).at n=21A369517