27531

Appears in sequences

• Sum of squares of three consecutive primes.at n=23A133529
• Numbers n such that prime[(n + 1)^2] - prime[n^2] is a perfect square.at n=30A145290
• Number of 4 X 4 X 4 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n.at n=39A166212
• Number of partitions p of n such that (number of numbers in p having multiplicity > 1) = number of 1s in p.at n=50A241090
• Number of n X 4 binary arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two no more than once.at n=5A268777
• Number of nX6 binary arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two no more than once.at n=3A268779
• T(n,k) = Number of n X k binary arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two no more than once.at n=39A268781
• T(n,k) = Number of n X k binary arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two no more than once.at n=41A268781
• Magic sums of 3 X 3 semimagic squares composed of odd squares.at n=10A269297
• Magic sums of 3 X 3 semimagic squares composed of squares of primes.at n=2A269344
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 371", based on the 5-celled von Neumann neighborhood.at n=33A271456
• Number of parts in all partitions of n in which no part occurs more than five times.at n=29A320608
• Möbius transform of A341528, n * sigma(A003961(n)).at n=53A347124