27615

Appears in sequences

• Expansion of ( 1-x ) / ( 1-4*x-3*x^2+3*x^3 ).at n=7A052981
• Number of n-celled polyominoes without holes, symmetric about axis 2.at n=36A056880
• Partial sums of A084570.at n=27A084569
• Numbers k such that the decimal digits of phi(k) are a permutation of those of k.at n=32A115921
• Numbers k for which 2*k-1, 4*k-1, 8*k-1 and 16*k-1 are primes.at n=24A124494
• Total sum of parts of multiplicity 6 in all partitions of n.at n=41A222734
• Number of (n+2) X (2+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 5 6 or 7.at n=18A252378
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 205", based on the 5-celled von Neumann neighborhood.at n=34A270731