18795

Appears in sequences

• Numbers k such that sigma(k) = sigma(k+7).at n=19A015867
• Expansion of 1/((1-8x)(1-9x)(1-10x)(1-12x)).at n=3A016091
• Decimal part of a(n)^(1/5) starts with a 'nine digits' anagram.at n=6A034280
• Numbers k such that 4*10^k - 11 is prime.at n=17A102738
• Number of n-node triangulations of the projective plane N_1 in which every node has degree >= 5.at n=13A129045
• Numbers of the form 26+p^2 (where p is a prime).at n=32A138689
• The number of P-positions in the game of Nim with up to 5 piles, allowing for piles of zero, such that the number of objects in the largest pile is n.at n=19A241731
• Numbers n such that n*2^2281 - 1 is prime.at n=15A265504
• Fixed points of A275957; numbers n for which A060125(n) = A225901(n).at n=39A275843
• Sum of the areas of the distinct rectangles (and the areas of the squares on their sides) with positive integer sides such that L + W = n, W < L.at n=29A294139
• Number of distinct determinants of 3 X 3 matrices with entries from {0, 1, ..., n}.at n=18A366158